Decomposition of <i>t</i>-Butanethiol into Hydrogen Sulfide without Hydrogen Addition over H-Y and H-beta Zeolites

MUKOYAMA Takashi, TOYA Mitsuo, HAYANO Shintaro, URASAKI Kohei, SHIMODA Naohiro, SATOKAWA Shigeo

doi:10.1627/jpi.58.176

Bibliographic Information

Other Title

H-YおよびH-ベータ型ゼオライトによる水素非共存下での<i>t</i>-ブタンチオールの硫化水素への分解
Decomposition of t-Butanethiol into Hydrogen Sulfide without Hydrogen Addition over H-Y and H-beta Zeolites

Search this article

Description

Catalytic direct decomposition of t-butanethiol (TBT) into hydrogen sulfide over zeolites without hydrogen addition was examined as a new desulfurization process for fuel cell systems. TBT is a widely used odorant in pipeline natural gas, and was easily decomposed into hydrogen sulfide and isobutene over H-Y and H-beta at low temperatures of 25-150 °C. However, catalyst deactivation of H-beta was observed at 60 °C and oligomerized products of isobutene were observed on the catalyst surface after long reaction times. The deactivation rate of TBT decomposition over H-beta increased with higher acid amounts of H-beta. The amount of oligomerized products deposited on the catalyst increased with lower TBT conversion in the initial stage of reaction. The deposition of oligomerized products and catalyst deactivation decreased after several hours. The amount of the oligomerized products deposited on the catalyst reached approximately 6 wt% after 8 h and remained constant after 125 h over H-beta (Si/Al=92.5) at 150 °C. The initial TBT conversion was constant during 125 h.

Journal

Journal of the Japan Petroleum Institute

Journal of the Japan Petroleum Institute 58 (3), 176-184, 2015-05-01

The Japan Petroleum Institute

Keywords

Details 詳細情報について

Export

Report a problem