Effect Of Silica Coating On Performance Of Copper-zinc Oxide Based Catalyst For Methanol Synthesis

Tetsuo Umegaki1*, Yoshiyuki Kojima1, Kohji Omata2

1Department of Materials and Applied Chemistry, College of Science and Technology, Nihon University, Tokyo 101-8308, Japan

2Department of Materials Science, Interdisciplinary Faculty of Science and Engineering, Shimane University, 1060, Nishikawatsu-Chou, Matsue, Shimane 690-8504, Japan

Adv. Mater. Lett., 2015, 6 (12), pp 1026-1030

DOI: 10.5185/amlett.2015.5558

Publication Date (Web): Nov 24, 2015

E-mail: umegaki.tetsuo@nihon-u.ac.jp

Abstract


He present study investigated the effect of silica coating on catalytic activity of copper-zinc oxide based catalyst for methanol synthesis. Silica coated catalysts prepared using ammonia and L(+)-lysine as promoters of silica coating shows almost same specific surface area and pore size distribution compared with pristine commercial copper-zinc oxide based catalyst, while silica coated catalyst prepared using L(+)-arginine shows significantly lower specific surface area than the pristine catalyst and its mesopores and macropores disappear. Silica coated using ammonia and L(+)-lysine weakly bonds to the commercial catalyst without loading into pores of the catalyst, while silica using L(+)-arginine strongly bonds to the catalyst with loading into the pores of the catalyst. Reduction temperature of fine copper species of the silica coated catalysts shifts to the higher temperature than that of the pristine catalyst, and shift temperatures of the silica coated samples prepared using ammonia and L(+)-lysine are lower than that of the sample prepared using L(+)-arginine, indicating that strongly bonding silica prevents reduction of fine copper species in the commercial catalyst. Among the silica coated catalysts, the coated catalyst prepared with ammonia shows highest COx conversion, and the catalytic activity increase with the decrease of weight ratios of silica to catalyst.

Keywords

Copper-zinc oxide based catalyst, methanol synthesis, silica coated, kinds of promoters, weight ratio of silica to catalyst.

Current Issue

Advanced Materials Congress Celebrating 10th Years of Establishment


Secure Management of Networked Batteries for Building Integrated Photovoltaics (BIPV) Systems  


The Cause of 100-year Low Carbonated Concrete of the Bridge 


Organic Montmorillonite Intercalated Nano-composites Prevent Post-Surgical Associated Infections


Morphology/tensile Performance Relationship for LLDPE/PP Double Gated Injected Blends


Preparation and Characterization of Nickel Ferrite Nanoparticles via Sol-gel Method


Nitrogen-doped Diamond Nanowire Gas Sensor for the Detection of Methane


Manufacture of Functional Open-cell Al Foams with Recycled Al Scraps using NaCl Ball Space Holder 


Vilsmeier-Haack Transformations under Non Classical Conditions


New Application of Highly Vesicular Basalt from Jabel Isbil Volcano (Dhamar-Rada'a Volcanic Field), Yemen


An Assessment of Tribological Characteristics under different Operating Condition


Functional Bi Coatings as A Perspective Material for Radiation Shields Production against Electron Radiation


Effects of Silica Modified NiFe2O4 on the Dielectric and Electrical Properties of NiFe2O4 filled Poly (methyl methacrylate) Composites


Previous issues
The Journey of a Decade to Advancing Materials Are the Electrospun Polymers Polymeric Fibers? Mechanical and Thermal Properties of Composite Material and Insulation for a Single Walled Tank for Cryogenic Liquids Prediction of Long-Term Behavior for Dynamically Loaded TPU Investigation of Doped Titanium Dioxide in Anatase Phase. Study ab initio using Density Functional Theory Comparison between Single Al2O3 or HfO2 Single Dielectric Layers and their Nanolaminated Systems Preparation of Stable and Optimized Antibody-gold Nanoparticle Conjugates for Point of Care Test Immunoassays Resonance-Based Temperature Sensors using a Wafer Level Vacuum Packaged SOI MEMS Process Integrated System Based on the Hall Sensors Incorporating Compensation of the Distortions The Efficacy of Cinnamomum Tamala as a Potential Antimicrobial Substance against the Multi-Drug Resistant Enterococcus Faecalis from Clinical Isolates The Effect of Complexing Reagent on Structural, Electrical and Optical Properties of CuS Thin Film Laser Cladding of Fluorapatite Nanopowders on Ti6Al4V Preparation and Evaluation of Sulfonate Polyethylene Glycol Borate Ester as a Modifier of Functional Properties of Complex Petroleum Lithium Grease

Upcoming Congress

Knowledge Experience at Sea TM