Theses and Dissertations

Qiangu Yan

Issuing Body

Mississippi State University

Advisor

Toghiani, Hossein

Committee Member

Bricka, R. Mark

Committee Member

Toghiani, Rebecca K.

Date of Degree

4-30-2011

Document Type

Graduate Thesis - Open Access

Major

Chemical Engineering

Degree Name

Master of Science

College

James Worth Bagley College of Engineering

Department

Dave C. Swalm School of Chemical Engineering

Abstract

Nano-scaled carbons were produced by thermal treatment of pine wood chips and bio-char. The influence of temperature, heating rate, pyrolysis time, and type and flow rate of purge gas on the production of nano-carbons was investigated. Using TEM and SEM, different carbon-based nanomaterials were observed in the prepared samples. The effect of metal ion doping on the bio-char was also investigated. Highly functionalized nano carbonaceous materials were synthesized by low temperature hydrothermal carbonization (HTC) using glucose, sucrose, xylose, and cellulose. Carbon-encapsulated iron (Fe@C) core-shell particles were also synthesized by the HTC method and used as catalyst for Fischer-Tropsch synthesis to produce liquid hydrocarbons from syngas; it showed excellent activity. Nano-structured Co-Mo carbides over several nano-sized carbon materials were prepared using the carbothermal reduction and carbothermal hydrogen reduction methods. Nano-structured Co-Mo carbides derived from Vulcan® XC-72 were used as the catalyst to produce higher alcohols.

URI

https://hdl.handle.net/11668/17941

Comments

Nano carbons||Fischer-Tropsch synthesis (FTS)||catalyst||carbothermal hydrogen reduction (CHR)||carbothermal reduction (CR)||Co-Mo carbide||hydrothermal carbonization||treatment conditions||thermal treatment||biochar||pine wood||syngas||liquid fuels

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