Masters Theses

Keywords and Phrases

Carbon dioxide, catalysis; Light alkanes; Olefins; Oxidative dehydrogenation; Syngas

Abstract

”Most experts studying the global ecosystem and climate suggest that rising anthropogenic CO2 emissions have contributed to significant global climate change in the last half-century. The development of effective strategies that convert CO2 into energy, fuels, and chemicals are greatly preferable to oceanic or geologic sequestration options because they offer the potential to create new commercially-viable products from renewable carbon feedstock. On the other hand, the selective oxidative dehydrogenation of light alkanes (C2-C4) to corresponding olefins, methane reforming, and methane coupling are the major challenges for producing valuable and versatile feedstocks. The oxidative dehydrogenation of light alkanes with carbon dioxide (ODAC) reaction is a sustainable approach to the production of value-added monomers with less environmental footprint than non-oxidative dehydrogenation reactions.

This work involved the development of efficient catalysts for oxidative dehydrogenation reaction, methane coupling and reforming. Hydrothermal synthesis method was used to achieve isomorphous substitution of active single metal and bimetal promoters into the SAPO-34 zeolite support. Uniformly dispersed and highly active metal promoters anchored in the framework of the support were obtained. This is the first time of reporting success in isomorphous substitution of niobium, and vanadium metal promoters into the framework of CHA structure of SAPO-34 zeolite. The effect of different metal (indium, gallium, vanadium, niobium, and chromium) promoters and influence of CO2 as a soft oxidant in C-H bond scission were investigated. Catalyst characterizations were carried out using XRD, FTIR, and TPD, sorption, TGA and SEM techniques”--Abstract, page iii.

Advisor(s)

Rownaghi, Ali A.

Committee Member(s)

Rezaei, Fateme
Fitch, Mark W.

Department(s)

Chemical and Biochemical Engineering

Degree Name

M.S. in Chemical Engineering

Publisher

Missouri University of Science and Technology

Publication Date

Fall 2016

Pagination

ix, 140 pages

Note about bibliography

Includes bibliographic references (pages 119-139).

Rights

© 2016 Marktus A Atanga, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Thesis Number

T 12001

Electronic OCLC #

1313117315

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