Retrofitting and testing of an on-line gas chromatography apparatus using the reaction NO-C3H6-02 over ceria-alumina catalyst

Date of Publication

1998

Document Type

Master's Thesis

Degree Name

Master of Science in Chemical Engineering

Subject Categories

Biochemical and Biomolecular Engineering | Catalysis and Reaction Engineering | Engineering | Petroleum Engineering

College

Gokongwei College of Engineering

Department/Unit

Chemical Engineering

Thesis Adviser

Dr. Susan Gallardo

Defense Panel Chair

Dr. Carlito M. Salazar

Defense Panel Member

Dr. Azucena A. Puertollano
Susan Roces

Abstract/Summary

The Gas Chromatography apparatus donated by the Niiyama Laboratory in Japan is retrofitted to conforme with the desired set-up. Various connections are modified and new gas lines are installed. To test the stability of the newly retrofitted Gas Chromatography (G.C.) apparatus, the effect of the TCD oven temperature on the separation of air and the effect of the column temperature on the retention time of the propylene and carbon dioxide were conducted. Also, the performance of the G.C. apparatus during the actual experimental operation was investigated. The set-up utilized a fixed bed flow reactor system equipped with the newly retrofitted G.C. Apparatus and Nitrogen Oxide Analyzer. The effects of temperature and the activity time on the conversion of nitrogen oxides and propylene, oxygen consumption, as well as the yields of carbon monoxide and carbon dioxide were studied. It was shown that during the time course activity test, an activation of catalyst occurred. Also, the conversion of nitrogen oxide and propylene, as well as yields of carbon dioxide and carbon monoxide increased as the temperature of the reaction increased. The experiment showed that ceria-alumina gave a 24.23 percent NO conversion and 41.01 percent C3H6 conversion at 500 degrees Centigrade.

Experimental results revealed that ceria-alumina catalyst shows higher activity than alumina in the reduction of NO. Ceria-alumina is also an effective oxidation catalyst for it promotes a high propylene oxidation. Ceria-alumina, therefore, is a promising catalyst for the reduction of NO using propylene as reducing agent with oxygen. Based on the test conducted, it is likewise proven that the Gas Chromatography apparatus donated by the Niiyama Laboratory was successfully modified. It was retrofitted into good working condition suitable to be utilized in any catalytic research work.

Abstract Format

html

Language

English

Format

Print

Accession Number

TG02890

Shelf Location

Archives, The Learning Commons, 12F Henry Sy Sr. Hall

Physical Description

93 leaves

Keywords

Gas chromatography; Chromatographic analysis -- Equipment and supplies; Gases -- Separation; Chemical inhibitors; Catalysts; Cerium oxides

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