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Ni on Ce:Mg Oxides (9:1) as Catalyst for the Selective Catalytic Thermochemical Conversion of Glycerol to 1,2 Propanediol and Ethanol

Citation

Menchavez, Russel Navarro. (2014). Ni on Ce:Mg Oxides (9:1) as Catalyst for the Selective Catalytic Thermochemical Conversion of Glycerol to 1,2 Propanediol and Ethanol. Theses and Dissertations Collection, University of Idaho Library Digital Collections. https://www.lib.uidaho.edu/digital/etd/items/menchavez_idaho_0089n_10476.html

Title:
Ni on Ce:Mg Oxides (9:1) as Catalyst for the Selective Catalytic Thermochemical Conversion of Glycerol to 1,2 Propanediol and Ethanol
Author:
Menchavez, Russel Navarro
Date:
2014
Keywords:
1,2 PDO ethanol glycerol heterogeneous catalyst hydrogenolysis Ni catalyst
Program:
Biological & Agricultural Engineering
Subject Category:
Chemistry; Energy; Chemical engineering
Abstract:

A supported Ni catalyst was developed for the selective production of ethanol and 1,2 propanediol (1,2 PDO) from glycerol hydrogenolysis. Screening of various supports showed that Ni/ CeO2 has the best potential and was improved by addition of promoters. Adding Mg at a Ce:Mg molar ratio of 80:20 provided the best improvement for the combined selectivity of ethanol and 1,2 PDO. Ethanol selectivity was further improved to 15.28% by varying Ce:Mg molar ratio to 90:10. The catalyst of 25 wt% Ni/Ce:Mg (9:1) prepared via deposition precipation showed higher activity as compared to the catalyst prepared by impregnation. Catalyst calcined at 350˚C showed better selecitivies of ethanol and 1,2 PDO at 15.61% and 67.3%, respectively. The effects of reaction temperature, initial water content, initial hydrogen pressure, and extension of reaction time were also investigated. The catalyst 25 wt% Ni/Ce:Mg (9:1) showed a better potential as compared to the commercial Raney┬« Ni catalyst.

Description:
masters, M.S., Biological & Agricultural Engineering -- University of Idaho - College of Graduate Studies, 2014
Major Professor:
He, Brian
Committee:
Morra, Matthew; Van Gerpen, Jon
Defense Date:
2014
Identifier:
Menchavez_idaho_0089N_10476
Type:
Text
Format Original:
PDF
Format:
application/pdf

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