Methane Dry Reforming over Coke-Resistant Mesoporous Ni-Al2O3Catalysts Prepared by Evaporation-Induced Self-Assembly Method

ChemCatChem ◽  
2015 ◽  
Vol 7 (22) ◽  
pp. 3753-3762 ◽  
Author(s):  
Xiuzhong Fang ◽  
Cheng Peng ◽  
Honggen Peng ◽  
Wenming Liu ◽  
Xianglan Xu ◽  
...  
Keyword(s):  
Self Assembly ◽  
Dry Reforming ◽  
Methane Dry Reforming ◽  
Assembly Method ◽  
Evaporation Induced Self Assembly

scholarly journals Ni-containing catalysts based on ordered mesoporous MgO–Al2O3for methane dry reforming

2018 ◽  
Vol 5 (1) ◽  
pp. 59-66 ◽  
Author(s):  
Svetlana Pavlova ◽  
Yuliya Fedorova ◽  
Arkadii Ishchenko ◽  
Maxim Melgunov ◽  
Elena Melgunova ◽  
...  
Keyword(s):  
Self Assembly ◽  
Mesoporous Structure ◽  
Dry Reforming ◽  
One Pot ◽  
Methane Dry Reforming ◽  
Pluronic P123 ◽  
Ordered Mesoporous ◽  
Evaporation Induced Self Assembly ◽  
The One ◽  
Adsorption Desorption

Abstract The ordered mesoporous Mg- and Ni-Mg-alumina samples of general formula xwt%Mg-Al2O3 and ywt%Nixwt% Mg-Al2O3(x, y = 5, 10 % wt) have been prepared by the one-pot evaporation induced self-assembly (EISA) method using Pluronic P123 as a template. The textural and structural properties of the prepared samples have been characterized by N2adsorption-desorption analysis, BET, XRD, TEM with EDX, HAADF-STEM, and H2-TPR. The samples calcined at 700°C had an ordered mesoporous structure with a SSA of 170-250 m2/g, a pore volume of 0.5-0.64 cm3/g and a narrow distribution of the pore size (mean 12-16 nm). For the catalysts prepared by the one-pot EISA method, the size of the metal Ni particles was in the range of 3-12 nm and was conditioned by their confinement in the mesopores and the interaction with MgO and Al2O3. Testing in methane dry reforming in the 15v.% CH4+ 15v.%CO2feed, with He balance, at 650-750°C and the contact time of 0.015 s has shown the higher activity and stability of the ordered mesoporous 10w%Ni- 10w%Mg-Al2O3catalysts prepared by the one-pot method as compared with the catalyst of the same composition obtained by impregnation.

Facile synthesis of mesoporous ZnAl2O4 thin films through the evaporation-induced self-assembly method

2009 ◽  
Vol 488 (1) ◽  
pp. 320-324 ◽  
Author(s):  
Xiqiang Tian ◽  
Lijuan Wan ◽  
Kai Pan ◽  
Chungui Tian ◽  
Honggang Fu ◽  
...  
Keyword(s):  
Thin Films ◽  
Self Assembly ◽  
Facile Synthesis ◽  
Assembly Method ◽  
Evaporation Induced Self Assembly

scholarly journals Hydrogenolysis of Glycerol on the ZrO2-TiO2 Supported Pt-WOx Catalyst

Catalysts ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 312 ◽  
Author(s):  
Zhiwen Xi ◽  
Zhe Hong ◽  
Fangtao Huang ◽  
Zhirong Zhu ◽  
Wenzhi Jia ◽  
...  
Keyword(s):  
Physicochemical Properties ◽  
Self Assembly ◽  
Catalyst Surface ◽  
Acid Sites ◽  
Acidic Properties ◽  
Lewis Acid Sites ◽  
Molar Ratios ◽  
Assembly Method ◽  
Evaporation Induced Self Assembly ◽  
Glycerol Hydrogenolysis

A series of Pt/WOx-ZrO2-TiO2 catalysts with different Ti/Zr molar ratios was prepared by an evaporation induced self-assembly method, and used to efficient hydrogenolysis of glycerol to 1-PO and 1,3-PDO. BET, XRD, Raman, TEM, XPS and Py-IR were employed to characterize the physicochemical properties of the catalysts. The structural and acidic properties of the catalysts were affected by the Ti/Zr ratio of the support ZrO2-TiO2. Two new crystalline phases of ZrTiO4 and Ti2ZrO6 and the amount of acid sites were detected in the Pt/WOx-ZrO2-TiO2 catalysts. 1-PO is dominant in all products of glycerol hydrogenolysis over the supported Pt-WOx catalysts, which is attributed to more Lewis acid sites on the catalyst surface. The Pt/WOx-ZrO2-TiO2 catalyst with a Ti/Zr ratio of 7/3 showed the highest 1,3-PDO yield (25.3%) and 1-PO yield (42.3%), due to its more acid sites including Brønsted and Lewis, and higher concentration of surface Pt0.

Assembling ultra-thick and crack-free colloidal crystals via an isothermal heating evaporation induced self-assembly method

2012 ◽  
Vol 358 (12-13) ◽  
pp. 1611-1616 ◽  
Author(s):  
Qingsong Jiang ◽  
Chan Li ◽  
Shugang Shi ◽  
Degang Zhao ◽  
Lun Xiong ◽  
...  
Keyword(s):  
Self Assembly ◽  
Colloidal Crystals ◽  
Isothermal Heating ◽  
Assembly Method ◽  
Evaporation Induced Self Assembly

Preparation, Characterization, and Photocatalytic Performance of Bismuth and Boron Co-Doped Mesporous TiO2 by EISA Method

2014 ◽  
Vol 953-954 ◽  
pp. 1003-1007
Author(s):  
Yu Xiu Zhang ◽  
Li Yang ◽  
Dai Mei Chen ◽  
Shuang Deng ◽  
Ying Jie Shi
Keyword(s):  
Visible Light ◽  
Self Assembly ◽  
Photocatalytic Performance ◽  
X Ray Diffraction ◽  
X Ray ◽  
Assembly Method ◽  
Transmission Electron ◽  
Evaporation Induced Self Assembly ◽  
Crystallite Sizes ◽  
Mesoporous Structures

Abstract. The large-pore mesoporous Bi-B-TiO2 nanoparticles with the different Bi/Ti rations were prepared by EISA(evaporation-induced self-assembly) method. The prepared catalysts were characterized by X-ray diffraction, transmission electron microscopy, N2 absorption-desorption, ultraviolet visible light spectroscopy and photoluminescence spectroscopy technologies. The results revealed that all the samples are large aperture mesoporous structures. The crystallite sizes were in the range7-11nm, as confirmed by the results obtained from TEM images. The photodecomposition experiments showed that the photodegradation activity of Bi-B-doped TiO2 was higher than that of undoped TiO2 in degradation of 2, 4–dichlorophenol under visible light irradiation.

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