Controlling Carbon Deposition in Steam Reforming of Hydrocarbons Over an Unsupported Nickel Catalyst PDF Download
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Author: Kayla Harnden Publisher: ISBN: Category : Languages : en Pages :
Book Description
Products of steam reforming reactions were investigated, of hydrocarbons, ranging from methane to butane, over an unsupported nickel catalyst at high temperatures. The products included gaseous hydrogen, carbon monoxide, carbon dioxide and solid carbon. Carbon deposition was a major problem because carbon binds to the nickel sites, resulting in catalytic deactivation. Carbon deposition is more favoured at lower temperatures, lower steam: carbon ratios and longer hydrocarbon chain lengths. Carbon deposits were determined to occur at a faster rate than the removal of carbon through the Boudouard reaction at temperatures of 700°C and steam: carbon ratios of 1:1. Limiting carbon deposition was critical in order to maximize the catalyst activity. Treatment of the catalyst with butanethiol as a protecting agent was incorporated due to high binding affinity of sulfur to a metal surface, where the carbon deposition was significantly reduced as a result.
Author: Kayla Harnden Publisher: ISBN: Category : Languages : en Pages :
Book Description
Products of steam reforming reactions were investigated, of hydrocarbons, ranging from methane to butane, over an unsupported nickel catalyst at high temperatures. The products included gaseous hydrogen, carbon monoxide, carbon dioxide and solid carbon. Carbon deposition was a major problem because carbon binds to the nickel sites, resulting in catalytic deactivation. Carbon deposition is more favoured at lower temperatures, lower steam: carbon ratios and longer hydrocarbon chain lengths. Carbon deposits were determined to occur at a faster rate than the removal of carbon through the Boudouard reaction at temperatures of 700°C and steam: carbon ratios of 1:1. Limiting carbon deposition was critical in order to maximize the catalyst activity. Treatment of the catalyst with butanethiol as a protecting agent was incorporated due to high binding affinity of sulfur to a metal surface, where the carbon deposition was significantly reduced as a result.
Author: Asghar Zeini-Isfahani Publisher: ISBN: Category : Languages : en Pages : 247
Book Description
The object of this thesis was to gain a greater understanding of the mechanism of the catalytic steam reforming of methane and higher hydrocarbons and of related reactions (methanation and water-gas shift)......
Author: Kayla Harnden
Author: Kayla Harnden
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