Zeolite and metal oxide catalysts for the production of dimethyl sulfide and methanethiol

Document Type

Conference Proceeding

Publication Date

1-1-2005

Abstract

Metal oxide and zeolite catalysts were studied to determine their suitability for the production of methanethiol and dimethyl sulfide from the condensation of methanol and hydrogen sulfide. Fixed bed reactor experiments were used to test the catalysts in these processes. The acid sites of these catalysts were characterized by investigating the thermal desorption of 1-propanamine from these sites. WO3/ZrO2, La2O3/Al2O3, Al2O3, and HZSM-5 catalysts were active and selective in the production of dimethyl sulfide. The WO3/Al2O3 catalyst was less active than these four, but was selective to methanethiol. Based on this work and results in the literature, a mechanism was proposed that correlates methanethiol selectivity to catalyst acid strength. La2O3/Al2O3 gave a high yield to sulfur products even at high space velocities. This is an abstract of a paper presented at the AIChE Annual Meeting and Fall Showcase (Cincinnati, OH 10/30/2005-11/4/2005).

Publication Source (Journal or Book title)

AIChE Annual Meeting Conference Proceedings

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