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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Applied Chemistry for Engineering
Journal Basic Information
Journal DOI :
The Korean Society of Industrial and Engineering Chemistry
Editor in Chief :
Volume & Issues
Volume 25, Issue 6 - Dec 2014
Volume 25, Issue 5 - Oct 2014
Volume 25, Issue 4 - Aug 2014
Volume 25, Issue 3 - Jun 2014
Volume 25, Issue 2 - Apr 2014
Volume 25, Issue 1 - Feb 2014
Selecting the target year
Recent Research Highlights in Blue Fluorescent Emitters in Organic Light-Emitting Diodes
Park, Young Il ; Kim, Jin Chul ; Seo, Bongkuk ; Cho, Deug-Hee ;
Applied Chemistry for Engineering, volume 25, issue 3, 2014, Pages 233~236
DOI : 10.14478/ace.2014.1049
Organic light emitting diodes (OLEDs) received much attention from both academia and industry as the next-generation flat panel displays. However, to produce high quality OLEDs, there are still many challenges to overcome. Especially, in full color OLEDs, the intrinsic wide band gap of the blue emitting materials results in inferior efficiency compared to those of green and red emitting materials. Therefore, extensive research efforts have been devoted to develop efficient blue emitting materials. This review briefly summarizes the basics of OLEDs and introduces highlights of research efforts in blue-emitting materials.
Recent Trends on Catalytic Oxidation of Benzene without or with Ozone over Mn-Based Catalysts
Park, Sung Hoon ; Jeon, Jong-Ki ; Kim, Sang Chai ; Jung, Sang-Chul ; Park, Young-Kwon ;
Applied Chemistry for Engineering, volume 25, issue 3, 2014, Pages 237~241
DOI : 10.14478/ace.2014.1050
Benzene is a hazardous air pollutant, classified as carcinogenic to humans, that requires special management. Benzene exists both indoors and outdoors and the control measure of indoor benzene is different from that of outdoor benzene. The removal of indoor benzene needs to be accomplished at low temperatures (normally below
), while outdoor benzene is usually removed at much higher temperature (
) by using catalytic oxidation. This review paper summarizes the recent trend in catalytic treatment of airborne benzene, focusing on catalytic oxidation and catalytic ozone oxidation. Particular attention is paid to Mn-based catalysts for low-temperature oxidation of benzene, which are more economical than the other noble-metal catalysts. Various methods are used to generate more efficient Mn-based catalysts for benzene removal. Ozone oxidation is attracting particularly significant attention because it can remove benzene effectively below
, even at room temperature.
Materials and Characteristics of Emerging Transparent Electrodes
Chung, Moon Hyun ; Kim, Seyul ; Yoo, Dohyuk ; Kim, Jung Hyun ;
Applied Chemistry for Engineering, volume 25, issue 3, 2014, Pages 242~248
DOI : 10.14478/ace.2014.1013
Flexibility of a transparent device has been required in accordance with miniaturization and mobilization needs in recent industry. The most representative material used as a transparent electrode is indium tin oxide (ITO). However, a couple of disadvantages of ITO are the exhaustion of natural resource of indium and its inflexibility due to inorganic substance. To overcome the limit of ITO, a variety of alternative materials have been researched on development of transparent electrodes and its properties through composite materials. In this review, we classify some of emerged materials with their general studies.
Influence of the Cation Parts of Imidazolium Hexafluorophosphate on Synthesis of Pd/C Particles as a HFP Hydrogenation Catalyst
Kim, Chang-Soo ; Yoo, Kye Sang ;
Applied Chemistry for Engineering, volume 25, issue 3, 2014, Pages 249~253
DOI : 10.14478/ace.2014.1004
Palladium on carbon catalysts for hexafluoropropylene hydrogenation were prepared using imidazolium hexafluorophosphate with various cation parts. The morphology of palladium was relatively affected by the cation parts of the ionic liquid. With increasing alkyl chains of the ionic liquid cation, the shape of palladium particle changed from spherical to cylindrical due to the effect of steric stabilization. After calcination at
, all catalysts possessed the comparable crystal structure. Under the identical reaction conditions, the catalyst prepared using the ionic liquid with hexyl chain in cation parts showed the most effective reactivity.
Insulation Properties and Evaluation of Diglycerol Ester Synthesized by Solid Acid Catalysts
Gwon, Miseong ; Baek, Jae Ho ; Kim, Myung Hwan ; Park, Dae-Won ; Lee, Man Sig ;
Applied Chemistry for Engineering, volume 25, issue 3, 2014, Pages 254~261
DOI : 10.14478/ace.2014.1015
The transformer is a static electrical device that transfers energy by inductive coupling. Then, heat is occurred at coils, inner transformer was filled with insulating oils for cooling and insulation. Although mineral oil as insulating oil has been widely used, it does not meet health and current environmental laws because it is not biodegradable. Therefore, in this study, the diglycerol ester was synthesized with diglycerol and fatty acids (oleic acid and caprylic acid) over various catalysts for insulating oil having biodegradability, high flash points and low pour points. The sulfated zirconia (
) catalyst prepared at different calcination temperature shows the highest conversion of fatty acids at
due to crystallinity and high density of acid sites per surface area. When the molar ratio of oleic acid and caprylic acid is 1:3, the diglycerol ester shows superior insulation properties that are the flash point of
and pour point of
. The insulation properties of synthesized diglycerol ester shows the pour point of
and the flash point of over
. Therefore, diglycerol ester is superior to the vegetable oils in insulation properties.
Effect of CO
Injection in SAGD Process for Oil Sand Bitumen Recovery
Song, Byung Jin ; You, Nansuk ; Lee, Jae Hoon ; Lee, Chul Wee ;
Applied Chemistry for Engineering, volume 25, issue 3, 2014, Pages 262~267
DOI : 10.14478/ace.2014.1014
SAGD (steam assisted gravity drainage) process is the most commonly used in-situ technology for the recovery of bitumen from oil sand. It was investigated that the effects of different additives on bitumen recovery rate from oil sand in SAGD process among many possible mechanisms studied throughout the study. Bitumen recovery from thin layer oil sand reservoirs was simulated by using an experimental SAGD apparatus with scale of 150:1. To improve the simulation accuracy of thin layer oil reservoir, we have attached geological model (GM). Oil sand was simulated by using a mixture of extra heavy oil and glass beads with a diameter of 1.5 mm.
was used as an additive and the evolution of steam chambers were closely monitored, and the effects of
as an additive was investigated. Two types of injection methods were tested; continuous (
-SAGD) and sequential interruption (
injection. For the
-SAGD experiment, it was observed that the recovery rates and CSOR were efficiently improved control experiment from 60.2% to 69.3% and 7.1 to 6.0, respectively, whereas
-SAGD experiment decreased from 60.2% to 57.6% and 7.1 to 7.3.
Electromagnetic Interference Shielding Characteristics of Electroless Nickel Plated Carbon Nanotubes
Kim, Do Young ; Yun, Kug Jin ; Lee, Young-Seak ;
Applied Chemistry for Engineering, volume 25, issue 3, 2014, Pages 268~273
DOI : 10.14478/ace.2014.1021
In this study, multi-walled carbon nanotubes (MWCNT) were treated with nickel by electroless plating method for improving electromagnetic interference (EMI) shielding performance of MWCNT. The physical properties of electroless plated MWCNT were analyzed by using ultra-high resolution scanning electron microscope (UHR-SEM), thermogravimetry (TGA), sheet resistance analyzer and EMI shielding analyzer. EMI shielding efficiencies of nickel electroless plated MWCNT were measured to be 16 dB from 800 MHz band, which was 1.6 times increased compared to that of the activated MWCNT. Also, the average sheet resistance of nickel electroless plated MWCNT was measured to be
, which was 56% decreased compared to that of the activated MWCNT. This result could be attributed to the plating morphology on the surface of MWCNT. This result could be attributed to uniformity of plating morphology on the surface, which has more effect on EMI shielding efficiency than the amount of nickel plating.
Effect of Addition of Cosolvent γ-Butyrolactone on Morphology of Polysulfone Hollow Fiber Membranes
Yun, Sukbok ; Lee, Yongtaek ;
Applied Chemistry for Engineering, volume 25, issue 3, 2014, Pages 274~280
DOI : 10.14478/ace.2014.1026
Polysulfone (PSf) hollow fiber membranes were prepared via the nonsolvent induced phase separation technique. The cosolvent of
-butyrolactone (GBL) was added to the polymer solution containing a mixture of PSf and N,N-dimethylacetamide (DMAc). Water was utilized as a precipitation nonsolvent. The morphology of prepared membranes was investigated using a field emission scanning electron microscopy. The fabricated membrane showed a typical asymmetric structure such as the dense layer on the porous support layer by the addition of GBL to the polymer solution. As the concentration of GBL increased, the asymmetric porous structure was shown to be more intensified. It was thought that the added GBL played a role of enhancing the liquid-liquid phase separation of the polymer solution, since the cosolvent of GBL might change the thermodynamic solubility parameter of the doping solution. Permeation properties through the prepared hollow fiber membranes were characterized by measuring the pure water flux and the solute rejection using
polystyrene latex (PSL) beads. Experimental results revealed that the use of PEG as the internal coagulant enhanced the pure water flux up to 130 times compared to the use of EG while the rejection of the PSL beads decreased only 5%.
Synthesis of Pd/TiO
Catalyst for Aerobic Benzyl Alcohol Oxidation
Cho, Tae Jun ; Yoo, Kye Sang ;
Applied Chemistry for Engineering, volume 25, issue 3, 2014, Pages 281~285
DOI : 10.14478/ace.2014.1028
particles were prepared by wet impregnation for aerobic benzyl alcohol oxidation. Catalysts were prepared by the impregnation of 10 wt% palladium on
after calcination at various temperatures. The surface areas of the catalysts were changed with calcination temperature. The catalyst calcined at
possessed the highest surface areas. Catalytic activity of the prepared samples was examined for aerobic benzyl alcohol oxidation. Among the samples,
showed the highest catalytic activity. Moreover, the catalysts with various Pd concentrations from 5 wt% to 15 wt% were prepared to investigate an optimum catalyst. 10 wt%
was the most active in this reaction due to its higher surface areas and metal dispersion.
Preparation Nanosized TPA-Silicalite-1 with Different Silica Sources and Promoters
Jung, Sang-Jin ;
Applied Chemistry for Engineering, volume 25, issue 3, 2014, Pages 286~291
DOI : 10.14478/ace.2014.1029
In this study, nanosized TPA-silicalite-1 was synthesized with a suitable molar composition of TPAOH:
for the development of zeolite ceramic membranes to utilize as gas separation. As silica sources, TEOS, LUDOX AS-40 and CAB-O-SIL were used with the starting material of TPAOH.
, and a variety of acids and bases were used as promoters after TPAOH,
gel synthesis. To decrease synthesis time, a two step temperature change method was applied to the synthesis of TPA-silicalite-1 at a low temperature. TPA-silicalite-1 synthesized was analyzed with XRD, SEM, BET and TGA. As a result, TPA-silicalite-1 powders with a particle size of 100 nm and a specific surface area of
were obtained as optimum synthesis conditions when the two stage temperature change method was used with
Electrochemical Properties of Carbon Felt Electrode for Vanadium Redox Flow Batteries by Liquid Ammonia Treatment
Kim, Yesol ; Cho, Seho ; Park, Se-Kook ; Jeon, Jae-Deok ; Lee, Young-Seak ;
Applied Chemistry for Engineering, volume 25, issue 3, 2014, Pages 292~299
DOI : 10.14478/ace.2014.1030
In this study, nitrogen doped carbon felt (CFt) is prepared using thermal oxidation and liquid phase ammonia treatment to improve the efficiency for vanadium redox flow batteries (VRFB). The electrochemical properties of prepared CFt electrodes are investigated using cyclic voltammetry (CV) and charge/discharge test. The XPS result shows that the increase of liquid phase ammonia treatment temperature leads to the increased nitrogen functional group on the CFt surface. Redox reaction characteristics using CV reveal that the liquid phase ammonia treated CFt electrodes are more reversible than the thermally oxidized CFt. When CFt is treated by the liquid phase ammonia at
, VRFB cell energy efficiency, voltage efficiency, and current efficiency are increased about 6.93%, 1.0%, and 4.5%, respectively, compared to those of the thermally oxidized CFt. These results are because nitrogen functional groups on CFt help to improve the electrochemical properties of redox reaction between electrode and electrolyte interface.
A Study on the Reaction Characteristics of the HCHO Oxidation Using Nobel Metal Catalysts at Room Temperature
Kim, Geo Jong ; Seo, Phil Won ; Kang, Youn Suk ; Hong, Sung Chang ;
Applied Chemistry for Engineering, volume 25, issue 3, 2014, Pages 300~306
DOI : 10.14478/ace.2013.1033
In this study, we investigated the noble metal catalysts for HCHO removal at room temperature. These catalysts were characterized by XRD, FT-IR, CO-chemisorption. As a result, Pt and Pd based catalysts prepared by the reduction treatment showed the superior HCHO oxidation ability at room temperature. When the catalysts were prepared using
support, which is well known as the reducing support, showed the superior activity. Also, the activity decreased by the agglomeration of active metal with increasing the reduction time. In case of reduction catalysts, it has been confirmed that the desorption and adsorption ability properties of HCHO is excellent at room temperature.
Biosorption of Copper Ions by Recycling of Castanea crenata
Choi, Suk Soon ;
Applied Chemistry for Engineering, volume 25, issue 3, 2014, Pages 307~311
DOI : 10.14478/ace.2014.1035
In this present study, Castanea crenata was found as an excellent biosorbent for the removal capability of copper ions among four different wood wastes (Castanea crenata, Pinus densiflora, Larix kaemoferi and Robinia pseudoacaia). Also, the removal efficiencies of 5, 10, 20, 40 and 50 mg/L copper ions using Castanea crenata from aqueous solution were investigated. The most effective particle size of Castanea crenata for removing 5 mg/L copper ions was found to be
. When the concentration of Castanea crenata increased, the removal efficiencies of copper ions were enhanced. In addition, when the 0.8 g/100 mL of Castanea crenata was used for 30 min, the removal efficiencies of 20 and 40 mg/L copper ions were 99% and 85%, respectively. Moreover, the chemical treatment of Castanea crenata with 1 M sodium acetate was required to improve the removal ability for 50 mg/L copper ions. Meanwhile, 1 M hydrochloric acid was selected as the optimal desorption agent with 93% desorption efficiency of copper ions for recycling of modified Castanea crenata. Therefore, these experimental results could be employed as economical and practical engineering data for the development of copper removal processes.
Catalytic Combustion of Benzene over CuO-CeO
Mixed Oxides Prepared by Co-precipitation Method
Hong, Seong Soo ;
Applied Chemistry for Engineering, volume 25, issue 3, 2014, Pages 312~317
DOI : 10.14478/ace.2014.1036
Catalytic combustion of benzene over CuO-
mixed oxides prepared by co-precipitation method were investigated. The CuO-
mixed oxides were also prepared using different precipitant and CuO precursor. They were characterized by XRD, BET, XPS and
. In the CuO-
catalysts, characteristic copper oxide peaks were shown at
regardless of the precipitant. The Cu0.35 catalyst prepared using
as a precipitant revealed the highest activity on the combustion of benzene. In addition, the pretreatment with hydrogen enhanced the catalytic activity and the catalyst reduced at
showed the highest activity on the combustion of benzene.
Effect of Styrene and Maleic Anhydride Content on Properties of PP/Pulp Composites and Reactive Extrusion of Random PP
Lee, Jong Won ; Kim, Ji Hyun ; Kim, Youn Cheol ;
Applied Chemistry for Engineering, volume 25, issue 3, 2014, Pages 318~323
DOI : 10.14478/ace.2013.1037
In order to analyze the effect of maleic anhydride (MAH) content and styrene monomer (SM)/MAH mole ratio on reactive extrusion of maleic anhydride grafted random polypropylenes (MAH-g-rPP), MAH-g-rPPs were prepared by using a twin screw extruder. MAH contents were 0.5, 1.0, 3.0, and 5.0 phr and SM/initiator mole ratio was 0.0, 1.0, and 2.0. Dicumyl peroxide (DCP) was used as an initiator. The graft degree of MAH was confirmed by the existence of carbonyl group (C = O) stretching peak at
from FT-IR spectrum. The degree of graft reaction increased up to 3.0 phr MAH and showed the optimum value at 1.0 SM/MAH mole ratio from the area ratio of C = O and C-H stretching peak. Thermal and crystallization properties of MAH-g-rPP and PP/MAH-g-rPP/pulp composites were investigated by DSC, TGA, XRD, and POM. There was a decrease in non-isothermal crystallization temperature of PP/MAH-g-PP/pulp composites. Based on tensile properties and SEM pictures for the fractured surface of PP/MAH-g-PP/pulp composites, MAH content of 1.0 wt% and SM/MAH mole ratio of 1.0 were the optimum formulation as the compatibilizer. The rheological properties of the composites were measured by dynamic Rheometer to compare the processability of the composites with and without compatibilizer. The power law index showed slightly low value at the composites with compatibilizer.
Effect of Nano Bubble Oxygen and Hydrogen Water on Microalgae
Choi, Soo-Jeong ; Kim, Young-Hwa ; Jung, In-Ha ; Lee, Jae-Hwa ;
Applied Chemistry for Engineering, volume 25, issue 3, 2014, Pages 324~329
DOI : 10.14478/ace.2014.1038
Microalgae Nannochloropsis oculata (N. oculta) and Chlorella vulgaris (C. vulgaris) are important sources for biodisel because of the high content of neutral lipids. Stable nano bubble is maintained for a long time and therefore it is possible for use in biotechnology. In this study, effects of nano bubble oxygen or hydrogen water on the microalgae growth were characterized. The cell growth in nano bubble water was similar to that of control, and the total lipid content was rather low. But, chlorophyll content of N. oculata grown in nanno bubble oxygen and hydrogen water increased 54% and 30%, and increased 59%, 39% in C. vulgaris. Carotenoid content also increased 21%, 25% in N. oculata and 49%, 29% in C. vulgaris grown in nano bubble oxygen and hydrogen water. From these results, nano bubble water seems to enhance the photosynthetic capacity of microalgae.
High-Purity Purification of Indole Contained in Coal Tar Absorption Oil by Extraction-Distillation-Crystallization Combination
Kim, Su Jin ;
Applied Chemistry for Engineering, volume 25, issue 3, 2014, Pages 330~336
DOI : 10.14478/ace.2014.1042
Purification of indole contained in model coal tar absorption oil was examined by extraction-distillation-crystallization combination. The absorption oil consists of nine components such as four kinds of nitrogen heterocyclic compounds (9.2% quinoline, 2.4% iso-quinoline, 4.7% indole, 2.4% quinaldine), three kinds of bicyclic aromatic compounds (14.2% 1-methylnaphthalene, 31.8% 2-methylnaphthalene, 23.5% dimethylnaphthalene), 5.5% biphenyl and 3.3% phenyl ether. 99.5% indole was recovered by combination of formamide extraction-distillation-solute crystallization using n-hexane. Furthermore, the recovery process of indole contained in coal tar absorption oil was studied by using the experimental results obtained by each operation of this work.
Facile One-Pot Synthesis of PABA from MFB
Kim, Kyung-Duck ; Ryu, Young ; Kim, Seok-Chan ;
Applied Chemistry for Engineering, volume 25, issue 3, 2014, Pages 337~339
DOI : 10.14478/ace.2014.1020
A facile one-pot synthesis of p-aminobenzoic acid from methyl 4-formylbenzoate which is a main by product in dimethyl terephthalate production process has been developed. This process involves the formation of amide intermediate obtained from the reaction of an aldehyde in methyl 4-formylbenzoate with chlorine in methylene chloride and the subsequent treatment of acid chloride with ammonia. The resulting amide was converted into amine using Hofmann degradation to afford a p-aminobenzoic acid. This facile one-pot process does not involve any expensive materials and should offer an attractive alternative to p-aminobenzoic acid production.