Cover Page December-2015-Advanced Materials Letters

Advanced Materials Letters

Volume 6, Issue 12, Pages 1026-1030, December 2015
About Cover


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

Cloud Medicine set to Revolutionize Doorstep Personalized Healthcare


Various surfactants for 0 – 3 dimensional nanocarbons: Separation, exfoliation and solubilization


Polypyrrole based biofunctional composite layer for bioelectrocatalytic device system


Innovative Graphene-PDMS sensors for aerospace applications 


Effect of hot drawing process and carbonization temperature in electrochemical behavior of electrospun carbon nanofibers


Chemical Reactivity and Electronical Properties of Graphene and Reduced Graphene Oxide on Different Substrates


Laser Raman micro-spectroscopy as an effective non-destructive method of detection and identification of various sp2 carbon modifications in industry and in nature


Electrochemical promotion of ammonia synthesis with proton-conducting solid oxide fuel cells


Biomimetic surfaces with hierarchical structure using microsized texture and nanosized Cu particles for superhydrophobicity


Enhancement the properties of high and low-density polyethylene membranes by radiation grafting process


Synthesis of 9-Aminoacridine and its Application as an Anode Material for Aqueous Rechargeable Lithium–ion Batteries


Facile synthesis of novel tough and highly flexible biodegradable membranes for water microfiltration


Investigating the possibility of using acetic acid in place of HF in chromium-benzenedicarboxylates (MIL-53 and MIL-101) synthesis applicable for CO2 adsorption


Previous issues

Smart Healthcare pulls up Clouds for Virtual Medicine

Selecting the correct electromagnetic inspection technology 

Influence of railway-track grinding on the track material condition and tribological behaviour

Micromechanical Fatigue Modelling of the Size Effect in Micro-Scale 316L Stainless Steel Specimens

Functionalization of Graphene and Reduced Graphene Oxide in Different Matrices

Effect of parasitic polytypes on ballistic electron transport in chemical vapor deposition grown 6H-SiC epitaxial layers

Photomemristive heterostructures based on two-dimensional crystals

Architecture - behaviour - properties relationship in Star-shaped MPA-PMMA and MPA-PS hyper-branched copolymers

Graphene and doped graphene: A comparative DFT study

Ag2CO3 / Magnetic reduced graphene oxide nanocomposite as advanced visible light photocatalytic hybrid materials for efficient degradation of azo dye

Optimization of acid hydrolysis process for the preparation cellulose nanofibrils

Alginate/k-carrageenan and alginate/gelatin composite hydrogel beads for controlled drug release of curcumin

Study of microstructure and mechanical properties of friction stir welded ferrite-martensite DP700 steel

Upcoming Congress

Knowledge Experience at Sea TM