Missouri University of Science and Technology
CO2-Assisted Ethylene Production and Subsequent Purification: A Materials Development, Kinetic Assessment, and Process Performance Investigation
Abstract
dc:description.abstract<p>"This research focuses on the In-Situ CO<sub>2</sub> capture and utilization in the oxidative dehydrogenation of ethane (ODHE) for ethylene production, and a subsequent ethylene purification through adsorptive separation process. In particular, several dual-function materials (DFMs) were developed, formulated into 3D-structure, and investigated for ODHE reaction to ethylene under various process conditions using CO<sub>2</sub> as a mild oxidant. The DFMs materials were consisted of CaO and metal oxides (e.g., Cr<sub>2</sub>O<sub>3</sub> and V<sub>2</sub>O<sub>5</sub>) supporting H-ZSM-5. The results indicated that higher cell densities lead to better performance due to kinetic enhancement, and the optimum configuration is separate stacking of the adsorbent and catalyst phases.</p> <p>In the second part of the research, an induction swing adsorption process was designed, and a series of novel magnetic-responsive sorbents were developed for ethylene purification. The results indicated that both sets of sorbents (Fe<sub>x</sub>/MOF-74 and Fe<sub>x</sub>/13X) had high ethylene adsorption capacity, selectivity, and regeneration when exposed to an electromagnetic field. With a 20% Fe<sub>3</sub>O<sub>4</sub> /13X, the highest energy absorption was observed with the greatest ethylene desorption rate of 0.69 mmol/g. min. Interestingly, using induction heating, the cooling rate is 71% faster than the conventional heating method. Furthermore, the selectivity of C<sub>2</sub>H<sub>4</sub>/C<sub>2</sub>H<sub>6</sub> was constant at 4.10 even in the presence of impurity gases (e.g., CH<sub>4</sub>, H<sub>2</sub>) as in ternary and multicomponent gas mixtures. Overall, novel DFMs formulations for CO<sub>2</sub> capture-conversion processes, in particular for the production of light olefins, are developed, along with magnetic sorbents that facilitate the capture and purification of olefins from paraffins via induction heating"--Abstract, p. iv</p>
Degree
thesis:*- Name thesis:degree_name
- Ph. D. in Chemical Engineering
- Grantor
- Missouri University of Science and Technology
Author and committee
dc:creator, dc:contributor.*- Author dc:creator
-
- Baamran, Khaled
Subjects
dc:subject × 2Identifiers
dc:identifier.*- Repository record dc:identifier
- https://scholarsmine.mst.edu/doctoral_dissertations/3263
- OAI identifier oai:identifier
- oai:scholarsmine.mst.edu:doctoral_dissertations-4268