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Georgia Tech

1. Valenzuela, Mariefel Bayta. Batch Aqueous-phase Reforming of Lignocellulosic Biomass for Hydrogen Production.

Degree: MS, Chemical Engineering, 2006, Georgia Tech

Aqueous-phase reforming (APR) is reported for the first time for the production of H2 from actual biomass. The experiments are carried out in batch using a 100mL Parr microreactor heated to 225C. In this one-pot, two-step process, acid hydrolysis is used to break down the polymeric constituents of biomass to smaller soluble molecules and these species are reformed using a Pt/Al2O3 catalyst. The experiments show that increasing the acid concentration from 1% to 5% causes more than a twelve-fold increase in H2 concentration, with hydrogen a minor product accounting for 18% of the non-condensable gas phase and CO2 as the major product. In the presence of the Pt/Al2O3 reforming catalyst, both the selectivity and yield of hydrogen in the gas phase increase. This is accompanied by a noticeable decrease in carbon monoxide production. Comparison with other feeds such as glucose, wastepaper and ethylene glycol showed that the amount of hydrogen produced from biomass is of a comparable magnitude per gram of feed, although biomass yields more hydrogen per gram of carbohydrate than either glucose or wastepaper. Baseline experiments with only the catalysts in the absence of any biomass show no increase in the reactor system pressure when only water and helium are present, indicating that the observed hydrogen produced is sourced form the biomass. Advisors/Committee Members: Dr. Christopher W. Jones (Committee Co-Chair), Dr. Pradeep K. Agrawal (Committee Co-Chair), Dr. Howard "Jeff" Empie (Committee Member), Dr. Sujit Banerjee (Committee Member).

Subjects/Keywords: XPS; Hydrogen chemisorption; Waste paper; Bioenergy; Pt/Al2O3; Glucose; H2SO4; Water-gas shift; Hydrogen as fuel; Biomass energy; Chemisorption

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Valenzuela, M. B. (2006). Batch Aqueous-phase Reforming of Lignocellulosic Biomass for Hydrogen Production. (Masters Thesis). Georgia Tech. Retrieved from http://hdl.handle.net/1853/11624

Chicago Manual of Style (16th Edition):

Valenzuela, Mariefel Bayta. “Batch Aqueous-phase Reforming of Lignocellulosic Biomass for Hydrogen Production.” 2006. Masters Thesis, Georgia Tech. Accessed April 16, 2021. http://hdl.handle.net/1853/11624.

MLA Handbook (7th Edition):

Valenzuela, Mariefel Bayta. “Batch Aqueous-phase Reforming of Lignocellulosic Biomass for Hydrogen Production.” 2006. Web. 16 Apr 2021.

Vancouver:

Valenzuela MB. Batch Aqueous-phase Reforming of Lignocellulosic Biomass for Hydrogen Production. [Internet] [Masters thesis]. Georgia Tech; 2006. [cited 2021 Apr 16]. Available from: http://hdl.handle.net/1853/11624.

Council of Science Editors:

Valenzuela MB. Batch Aqueous-phase Reforming of Lignocellulosic Biomass for Hydrogen Production. [Masters Thesis]. Georgia Tech; 2006. Available from: http://hdl.handle.net/1853/11624

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