Characterization and catalytic application of homogeneous nano-composite oxides ZrO2–Al2O3

2004 ◽  
Vol 93-95 ◽  
pp. 595-601 ◽  
Author(s):  
Guoran Li ◽  
Wei Li ◽  
Minghui Zhang ◽  
Keyi Tao
Keyword(s):  
Nano Composite ◽  
Catalytic Application ◽  
Composite Oxides

Preparation of Hydrotalcites Derived Ni/Co/Cu/Fe Nanocomposite Oxides and their Catalytic Activities for Thermal Decomposition of Ammonium Perchlorate

2013 ◽  
Vol 683 ◽  
pp. 534-539 ◽  
Author(s):  
Hong Bo Liu ◽  
Zhi Yong Huang ◽  
Bing Zhi Guo ◽  
Qing Ze Jiao
Keyword(s):  
Thermal Decomposition ◽  
Ammonium Perchlorate ◽  
Spinel Phase ◽  
Average Crystallite Size ◽  
Thermal Decomposition Process ◽  
Nano Composite ◽  
Catalytic Activities ◽  
Surface Areas ◽  
Composite Oxides ◽  
Dta And Tg

Ni/Co/Cu/Fe nano-composite oxides (Ni/Co/Cu/Fe–NCOs) were prepared by calcination of Ni/Co/Cu/Fe hydrotalcites (Ni/Co/Cu/Fe–HTs) precursors. Ni/Co/Cu/Fe–NCOs were used as new catalysts on improving thermal decomposition of ammonium perchlorate (AP). Their catalytic activities were investigated using DTA and TG–MS. The results revealed that Ni/Co/Cu/Fe–NCOs exhibited NiO and spinel phase with high specific surface areas of 90–120 m2 g–1. They have homogenous particles with average crystallite size in the range of 50–60 nm. The thermal decomposition process of AP can be accelerated by the addition of Ni/Co/Cu/Fe–NCOs. Ni/Co/Cu/Fe–NCOs achieved the purpose of improving thermal decomposition of AP based on the presence of superoxide ion (O2–) on the surface of Ni/Co/Cu/Fe–NCOs.

NOVEL PREPARATION OF NANO-COMPOSITE CuO-Cr2O3 USING CTAB-TEMPLATE METHOD AND EFFICIENT FOR HYDROGENATION OF BIOMASS-DERIVED FURFURAL

2013 ◽  
Vol 06 (01) ◽  
pp. 1350007 ◽  
Author(s):  
KAI YAN ◽  
XU WU ◽  
XIA AN ◽  
XIANMEI XIE
Keyword(s):  
High Surface ◽  
High Surface Area ◽  
Metal Nitrate ◽  
Hexadecyltrimethylammonium Bromide ◽  
X Ray Diffraction ◽  
Nano Composite ◽  
Catalytic Activities ◽  
Composite Oxides ◽  
Novel Method ◽  
Templating Effect

A simple route to fabricate nano-composite oxides CuO-Cr2O3 using hexadecyltrimethylammonium bromide (CTAB)-templated Cu-Cr hydrotalcite as the precursor is presented. This novel method is based on CTAB-templating effect for mesostructure directing and using the cheap metal nitrate, followed by removal of CTAB. It was indicated that the nano-composite CuO-Cr2O3 was formed during the removal of CTAB. X-ray diffraction (XRD) and transitional electronic microscopy (TEM) revealed nice nano-composite oxides CuO-Cr2O3 were formed with high crystallinity. N2 adsorption and desorption indicated that a high surface area of 170.5 m2/g with a pore size of 2.7 nm of the nano-composite CuO-Cr2O3 was facilely resulted. The as-synthesized nano-composite oxides CuO-Cr2O3 display good catalytic activities for hydrogenation of furfural to furfuryl alcohol, whereas 86% selectivity was achieved at 75% conversion of furfural.

Template-free synthesis of wormhole-like mesoporous Ni–Al composite oxides and catalytic application for steam reforming of benzene

2015 ◽  
Vol 22 (5) ◽  
pp. 1153-1160 ◽  
Author(s):  
Xingfu Shang ◽  
Xueguang Wang ◽  
Xiujing Zou ◽  
Xionggang Lu ◽  
Weizhong Ding
Keyword(s):  
Steam Reforming ◽  
Catalytic Application ◽  
Composite Oxides ◽  
Al Composite ◽  
Template Free

Functional nano-composite oxides synthesized by environmental-friendly auto-combustion within a micro-bioreactor

2008 ◽  
Vol 43 (8-9) ◽  
pp. 2248-2259 ◽  
Author(s):  
Wei Zhou ◽  
Zong Ping Shao ◽  
Ran Ran ◽  
Wan Qin Jin ◽  
Nan Ping Xu
Keyword(s):  
Nano Composite ◽  
Environmental Friendly ◽  
Composite Oxides ◽  
Auto Combustion

Chitosan Nano-composite containing Undecatungstosilicate via Cobalt Substitution: Characterization and Evaluation of their Biological Activity

2019 ◽  
Vol 35 (3) ◽  
pp. 305-316
Author(s):  
SHIVA ARUN ◽  
◽  
YADVENDRA SINGH ◽  
AMREEN NAZ ◽  
PRABHA BHARTIYA ◽  
...  
Keyword(s):  
Biological Activity ◽  
Nano Composite ◽  
Cobalt Substitution
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