Cu-Mo2C/MCM-41: An Efficient Catalyst for the Selective Synthesis of Methanol from CO2

Abstract

Supported molybdenum carbide (yMo 2 C/M41) and Cu-promoted molybdenum carbide, using a mechanical mixing and co-impregnation method (xCuyMo 2 C/M41-M and xCuyMo 2 C/M41-I) on a mesoporous molecular sieve MCM-41, were prepared by temperature-programmed carburization method in a CO/H 2 atmosphere at 1073 K, and their catalytic performances were tested for CO 2 hydrogenation to form methanol. Both catalysts, which were promoted by Cu, exhibited higher catalytic activity. In comparison to 20Cu20Mo 2 C/M41-M, the 20Cu20Mo 2 C/M41-I catalyst exhibited a stronger synergistic effect between Cu and Mo 2 C on the catalyst surface, which resulted in a higher selectivity for methanol in the CO 2 hydrogenation reaction. Under the optimal reaction conditions, the highest selectivity (63%) for methanol was obtained at a CO 2 conversion of 8.8% over the 20Cu20Mo 2 C/M41-I catalyst.

Hydrogen Utilization in Green Fuel Synthesis via CO2 Conversion to Methanol over New Cu-Based Catalysts

“…CO2 hydrogenation to methanol by using Cu-based catalytic systems promoted by several oxides/carriers has been widely investigated in literature [3,5,[16][17][18][19][20][21][22][23][24][27][28][29][30][31][32], although very few examples of multicomponent CuO-ZnO-CeO2 and CuO-ZnO-CeO2-ZrO2 systems are still present [25,26,33,34,41,42].…”

“…Prompted by seeking better performing formulations, many authors have explored new catalytic compositions, active in the CO 2 hydrogenation, alternative to the copper-based, such as combinations of Pd [13,14], Au [10,15], or Mo 2 C [16,17]. Nevertheless, copper-based catalysts still remain the most suitable catalysts for commercial applications [18].…”

Development of an Efficient Methanol Production Process for Direct CO2 Hydrogenation over a Cu/ZnO/Al2O3 Catalyst

“…The large contribution in total CO 2 emission originates from coal or natural gas power plants [1][2][3][4][5][6]. To reducing CO 2 concentrations, two proposed methods have been developed and implemented: carbon capture and storage (CCS) and carbon capture and utilization (CCU) [7][8][9][10]. Converting CO 2 into valuable intermediate chemicals and products (such as methanol, carbonates, formic acid, methane or kerosene) is economically of interest as can potentially recoups the costs of CO 2 capture and conversion [10][11][12].…”

“…To reducing CO 2 concentrations, two proposed methods have been developed and implemented: carbon capture and storage (CCS) and carbon capture and utilization (CCU) [7][8][9][10]. Converting CO 2 into valuable intermediate chemicals and products (such as methanol, carbonates, formic acid, methane or kerosene) is economically of interest as can potentially recoups the costs of CO 2 capture and conversion [10][11][12]. Methanol is one of the possible fuel candidates that can be made by CO 2 hydrogenation [13][14][15].…”

Catalytic Conversion of CO2/H2 into Alcohol Using Modified Lampung–Zeolite as Catalyst

“…For this purpose, different catalysts have been tested and in general, the results obtained indicate that catalysts play very important roles in governing the yield and type of product resulted. As an example, Cu 20 Mo 2 C/M41 catalyst abled to produce 5.5% yield of methanol at a CO 2 conversion of 8.8% 1 . Other groups of research using different kinds of catalysts such as Fe-Zn-Zr/HY composite catalyst abled to obtain isoalkanes at 340 o C as much as 20% CO 2 conversion, 45% selectivity to i-C 4 ; and modified natural clinoptilolite from Bayah -Indonesia operated at 60 -80 o C and abled to obtain almost 100% glycerol carbonate from 25% conversion of glycerol 11 .…”