Effect of preparation of Fe–Zr–K catalyst on the product distribution of CO2 hydrogenation

RSC Advances ◽  
2015 ◽  
Vol 5 (98) ◽  
pp. 80196-80202 ◽  
Author(s):  
Xiaojuan Su ◽  
Jianli Zhang ◽  
Subing Fan ◽  
Qingxiang Ma ◽  
Tian-Sheng Zhao
Keyword(s):  
Catalytic Activity ◽  
Product Distribution ◽  
Co2 Hydrogenation ◽  
Light Olefins ◽  
High Catalytic Activity ◽  
Homogeneous Precipitation ◽  
Microwave Assisted

Small and uniform Fe–Zr–K particles with mesopores obtained by microwave assisted homogeneous precipitation show high catalytic activity and stability for the selective production of light olefins with low CO from CO2 hydrogenation.

Effect of Co, Cu, and Zn on FeAlK catalyst in CO2 hydrogenation to C5+ hydrocarbons

2022 ◽  
Author(s):  
Khasan Nasriddinov ◽  
Ji-Eun Min ◽  
Hae-Gu Park ◽  
Seung Ju Han ◽  
Jingyu Chen ◽  
...  
Keyword(s):  
Global Warming ◽  
Catalytic Activity ◽  
Fossil Fuels ◽  
Co2 Hydrogenation ◽  
High Catalytic Activity ◽  
Long Chain ◽  
Cu And Zn

Direct CO2 hydrogenation to long-chain hydrocarbons can mitigate global warming by extensively replacing fossil fuels. However, designing a suitable catalyst with high catalytic activity and C5+ hydrocarbon selectivity continues to...

Pore size effects on physicochemical properties of Fe-Co/K-Al2O3 catalysts and their catalytic activity in CO2 hydrogenation to light olefins

2019 ◽  
Vol 483 ◽  
pp. 581-592 ◽  
Author(s):  
Thanapha Numpilai ◽  
Narong Chanlek ◽  
Yingyot Poo-Arporn ◽  
Suttipong Wannapaiboon ◽  
Chin Kui Cheng ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Physicochemical Properties ◽  
Pore Size ◽  
Size Effects ◽  
Co2 Hydrogenation ◽  
Light Olefins

scholarly journals Effect of Sulfation on Zirconia-Pillared Montmorillonite to the Catalytic Activity in Microwave-Assisted Citronellal Conversion

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Is Fatimah ◽  
Dwiarso Rubiyanto ◽  
Thorikul Huda
Keyword(s):  
Catalytic Activity ◽  
Surface Acidity ◽  
Total Pore Volume ◽  
High Catalytic Activity ◽  
X Ray Diffraction ◽  
Adsorption Method ◽  
X Ray ◽  
Pillared Montmorillonite ◽  
Microwave Assisted ◽  
Tandem Cyclization

Preparation of sulfated zirconia-pillared montmorillonite was carried out in two steps; zirconia pillarization and sulfation to zirconia-pillared montmorillonite. The prepared materials were characterized by using X-ray diffraction (XRD), measurement of the specific surface area, total pore volume and pore size distribution by the N2adsorption method, scanning electron microscopy-energy dispersive X-ray (SEM-EDX), and surface acidity determination by using pyridine adsorption-FTIR analysis. The activity of the materials as catalysts was evaluated for a microwave-assisted conversion of citronellal. The results showed that the prepared materials had a physicochemical character that promoted high catalytic activity to convert citronellal. From varied Zr content and study of the effect of sulfation on the activity, it was found that Zr content and sulfation increase the surface acidity of the material as shown by the higher total conversion and tendency to produce menthol as a product of the tandem cyclization-hydrogenation mechanism.

scholarly journals Binary Oxides Prepared by Microwave-Assisted Solution Combustion: Synthesis, Characterization and Catalytic Activity

Materials ◽  
2019 ◽  
Vol 12 (6) ◽  
pp. 910 ◽  
Author(s):  
Kawthar Frikha ◽  
Lionel Limousy ◽  
Jamel Bouaziz ◽  
Kamel Chaari ◽  
Ludovic Josien ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Copper Oxide ◽  
Solution Combustion Synthesis ◽  
Oxide Phase ◽  
Catalytic Performance ◽  
High Catalytic Activity ◽  
Solution Combustion ◽  
Test Reaction ◽  
Promising Alternative ◽  
Microwave Assisted

Three different alumina-based Ni, Cu, Co oxide catalysts with metal loading of 10 wt %, and labeled 10Ni–Al, 10Co–Al and 10Cu–Al, were prepared by microwave-assisted solution combustion. Their morphological, structural and surface properties were deeply investigated by complementary physico-chemical techniques. Finally, the three materials were tested in CO oxidation used as test reaction for comparing their catalytic performance. The 10Cu–Al catalyst was constituted of copper oxide phase, while the 10Ni–Al and 10Co–Al catalysts showed the presence of “spinels” phases on the surface. The well-crystallized copper oxide phase in the 10Cu–Al catalyst, obtained by microwave synthesis, allowed for obtaining very high catalytic activity. With a CO conversion of 100% at 225 °C, the copper containing catalyst showed a much higher activity than that usually measured for catalytic materials of similar composition, thus representing a promising alternative for oxidation processes.

Catalytic Performance of CuPd/BNNS Nanocatalysts Prepared by Microwave-Assisted Synthesis for the Reduction of Cr(VI)

NANO ◽  
2020 ◽  
Vol 15 (11) ◽  
pp. 2050142
Author(s):  
Xiaorui Zhang ◽  
Guohua Li ◽  
Enyan Hu ◽  
Longjun Xu ◽  
Siping Gan ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Catalytic Activity ◽  
Noble Metal ◽  
Metal Content ◽  
Reaction Rate ◽  
Microwave Assisted Synthesis ◽  
High Catalytic Activity ◽  
X Ray ◽  
Microwave Assisted ◽  
Boron Nitride Nanosheet

Copper-palladium (CuPd)/boron nitride nanosheet (BNNS) nanocatalysts were successfully prepared by a microwave-assisted method by using BNNSs as a carrier. These catalysts with a low noble metal content had a high catalytic activity for Cr(VI) reduction at room temperature. The reaction rate reached 0.04044[Formula: see text]s[Formula: see text], which was approximately 2.5 times that of Cu8Pd2/rGO with the same metal loading amount. Compared with the previously reported PdCu/NG nanocatalysts with a high noble metal content, the reaction rate increased more than five times. This is of great significance to the application of supported metal composites in environmental catalysis. The structure and morphology of the catalyst was characterized by means of X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and high-resolution transmission electron microscopy (HRTEM). Several types of control experiments showed that the catalytic activity of the catalysts was not only influenced by the synergistic effect of bimetallic CuPd and metal-BNNSs but also related to the catalytic effect of the BNNS carrier itself.

Ultrafast Microwave-Assisted Route to Surfactant-Free Ultrafine Pt Nanoparticles on Graphene: Synergistic Co-reduction Mechanism and High Catalytic Activity

2011 ◽  
Vol 23 (11) ◽  
pp. 2772-2780 ◽  
Author(s):  
Paromita Kundu ◽  
C. Nethravathi ◽  
Parag A. Deshpande ◽  
M. Rajamathi ◽  
Giridhar Madras ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Pt Nanoparticles ◽  
High Catalytic Activity ◽  
Reduction Mechanism ◽  
Microwave Assisted ◽  
Co Reduction
Sign in / Sign up

Export Citation Format

Share Document