Effects of Ni(OH)2 Morphology on the Catalytic Performance of Pd/Ni(OH)2/Ni Foam Hybrid Catalyst toward Ethanol Electrooxidation

2018 ◽  
Vol 1 (11) ◽  
pp. 6040-6046 ◽  
Author(s):  
Chen Li ◽  
He Wen ◽  
Piao-Ping Tang ◽  
Xiao-Ping Wen ◽  
Lin-Song Wu ◽  
...  
Keyword(s):  
Catalytic Performance ◽  
Ethanol Electrooxidation ◽  
Hybrid Catalyst ◽  
Ni Foam

Facile synthesis and catalytic performance of Co3O4nanosheets in situ formed on reduced graphene oxide modified Ni foam

2017 ◽  
Vol 46 (40) ◽  
pp. 13845-13853 ◽  
Author(s):  
Congying Song ◽  
Xianzhi Yin ◽  
Biaopeng Li ◽  
Ke Ye ◽  
Kai Zhu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Hydrothermal Method ◽  
Reduced Graphene Oxide ◽  
Three Dimensional ◽  
Catalytic Performance ◽  
Ni Foam ◽  
Facile Synthesis ◽  
Reduced Graphene ◽  
Catalyst Electrode

A three-dimensional (3D) catalyst electrode of Co3O4nanosheetsin situformed on reduced graphene oxide modified Ni foam (Co3O4/rGO@Ni foam) for H2O2electroreduction is prepared by a two-step hydrothermal method.

scholarly journals Dual Stimuli-Responsive Copper Nanoparticles Decorated SBA-15: A Highly Efficient Catalyst for the Oxidation of Alcohols in Water

Nanomaterials ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 2051
Author(s):  
Anju Maria Thomas ◽  
Jerome Peter ◽  
Saravanan Nagappan ◽  
Anandhu Mohan ◽  
Chang-Sik Ha
Keyword(s):  
Mesoporous Silica ◽  
Copper Nanoparticles ◽  
Catalytic Performance ◽  
Solution Temperature ◽  
Stimuli Responsive ◽  
Hybrid Catalyst ◽  
Ph Responsive ◽  
Efficient Catalyst ◽  
13C Nuclear Magnetic Resonance ◽  
Alcohol Conversion

In the present work, a temperature and pH-responsive hybrid catalytic system using copolymer-capped mesoporous silica particles with metal nanoparticles is proposed. The poly(2-(dimethylamino)ethyl methacrylate)(DMAEMA)-co-N-tert-butyl acrylamide) (TBA)) shell on mesoporous silica SBA-15 was obtained through free radical polymerization. Then, copper nanoparticles (CuNPs) decorated SBA-15/copolymer hybrid materials were synthesized using the NaBH4 reduction method. SBA-15 was functionalized with trimethoxylsilylpropyl methacrylate (TMSPM) and named TSBA. It was found that the CuNPs were uniformly dispersed in the mesoporous channels of SBA-15, and the hybrid catalyst exhibited excellent catalytic performance for the selective oxidation of different substituted benzyl alcohols in water using H2O2 as an oxidant at room temperature. The dual (temperature and pH-) responsive behaviors of the CuNPs/p(DMAEMA-co-TBA)/TSBA catalyst were investigated using the dynamic light scattering technique. The conversion of catalytic products and selectivity were calculated using gas chromatographic techniques, whereas the molecular structure of the products was identified using 1H and 13C nuclear magnetic resonance (NMR) spectroscopy. The catalyst showed excellent catalytic activity toward the oxidation of alcohol to aldehyde in an aqueous medium below the lower critical solution temperature (LCST) and pKa values (7–7.5) of the copolymer. The main advantages of the hybrid catalyst, as compared to the existing catalysts, are outstanding alcohol conversion (up to 99%) for a short reaction time (1 h), small amount of the catalyst (5 mg), and good recyclability equal to at least five times.

scholarly journals CuZnZr-Zeolite Hybrid Grains for DME Synthesis: New Evidence on the Role of Metal-Acidic Features on the Methanol Conversion Step

Catalysts ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 671
Author(s):  
Massimo Migliori ◽  
Antonio Condello ◽  
Francesco Dalena ◽  
Enrico Catizzone ◽  
Girolamo Giordano
Keyword(s):  
Acid Catalyst ◽  
Methanol Conversion ◽  
Catalytic Performance ◽  
Acid Sites ◽  
Zeolite Catalysts ◽  
Hybrid Catalyst ◽  
Zeolite Structure ◽  
Precipitation Medium ◽  
Co Precipitation ◽  
New Evidence

The assessment of the catalytic performance of “hybrid” metal/zeolite catalysts (based on FER or MFI structure and CuZnZr metal complexes) in the methanol dehydration step to DME has been studied in this work. The results clearly show that there is an important effect of the interaction between metal and acid sites affecting the acid catalyst performances. Additionally, deactivation, studied by means of a Timo-on-Stream (TOS) test, was affected by the type of zeolite structure used for hybrid catalyst preparation. The decrease in DME selectivity can be attributed to the cooperation of metal and acid sites in the production of different compounds (mainly methyl formate and dimethoxy methane) converting methanol and DME. The presence of these compounds (indicating different reaction pathways active) was found to be dependent on the zeolite structure and on the type of co-precipitation medium (water or ethanol) used to prepare the hybrid catalyst.

Synthesis of Free‐Standing Alloyed PdSn Nanoparticles with Enhanced Catalytic Performance for Ethanol Electrooxidation

2021 ◽  
Vol 8 (23) ◽  
pp. 4509-4514
Author(s):  
Ben Zhang ◽  
Xingxue Zhang ◽  
Jie Yan ◽  
Zhengshuai Cao ◽  
Mingyuan Pang ◽  
...  
Keyword(s):  
Catalytic Performance ◽  
Ethanol Electrooxidation ◽  
Free Standing

A novel organic–inorganic hybrid material: production, characterization and catalytic performance for the reaction of arylaldehydes, dimedone and 6-amino-1,3-dimethyluracil

2020 ◽  
Vol 44 (12) ◽  
pp. 4736-4743 ◽  
Author(s):  
Abdolkarim Zare ◽  
Manije Dianat ◽  
Mohammad Mehdi Eskandari
Keyword(s):  
Hybrid Material ◽  
Catalytic Performance ◽  
Hybrid Catalyst ◽  
Inorganic Hybrid ◽  
Material Production ◽  
Inorganic Hybrid Material

A novel silica-based organic–inorganic hybrid catalyst was prepared, characterized and applied for the synthesis of pyrimido[4,5-b]quinolines.

scholarly journals Gold nanorods on three-dimensional nickel foam: a non-enzymatic glucose sensor with enhanced electro-catalytic performance

RSC Advances ◽  
2017 ◽  
Vol 7 (58) ◽  
pp. 36744-36749 ◽  
Author(s):  
Wenqi Liu ◽  
Xiaochun Wu ◽  
Xiaojin Li
Keyword(s):  
Electrochemical Sensor ◽  
Gold Nanorods ◽  
Network Structure ◽  
Glucose Sensor ◽  
Nickel Foam ◽  
Three Dimensional ◽  
Catalytic Performance ◽  
Ni Foam ◽  
Dimensional Network

A non-enzymatic electrochemical sensor with a unique three dimensional network structure was developed by combining Ni foam with Au NRs.

Synthesis gas conversion to isobutane-rich hydrocarbons over a hybrid catalyst containing Beta zeolite – role of doped palladium and influence of the SiO2/Al2O3 ratio

2015 ◽  
Vol 5 (9) ◽  
pp. 4501-4510 ◽  
Author(s):  
Congming Li ◽  
Kaoru Fujimoto
Keyword(s):  
Synthesis Gas ◽  
Catalytic Performance ◽  
Beta Zeolite ◽  
Selective Synthesis ◽  
Hybrid Catalyst ◽  
Synthesis Gas Conversion ◽  
Gas Conversion ◽  
Excellent Catalytic Performance

Pd-doped Beta exhibits excellent catalytic performance for selective synthesis of isobutane from synthesis gas while Pd-free Beta could not.

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