Effects of steam on toluene hydrogenation over a Ni catalyst

Ryosuke Atsumi, Keisuke Kobayashi, Cui Xieli, Tetsuya Nanba, Hideyuki Matsumoto, Keigo Matsuda, Taku Tsujimura

研究成果: Article査読

4 被引用数 (Scopus)

抄録

The catalytic toluene hydrogenation over Ni/SiO2 was carried out using H2 or a H2/H2O mixture. The toluene conversion and MCH selectivity were evaluated under partial steam pressures 0−10 kPa, at H2/toluene molar ratios 1–5, and at temperatures 393−453 K. In the absence of steam, toluene conversion increased with increasing H2 partial pressure, and the MCH selectivity decreased with increasing temperature. In the presence of steam, the toluene conversion showed near-constant activities over the entire range of steam partial pressures, and the MCH selectivity increased with increasing steam partial pressure. This result indicated that the addition of steam inhibited byproduct formation. To clarify the effects of steam on the side-reaction, the byproducts composition was analyzed using a gas chromatograph. The results showed that the addition of steam inhibited demethylation, the ring-opening reaction of MCH, the disproportionation of toluene, and isomerization to convert six-membered ring compounds into five-membered ring compounds.

本文言語English
論文番号117374
ジャーナルApplied Catalysis A: General
590
DOI
出版ステータスPublished - 2020 1 25
外部発表はい

ASJC Scopus subject areas

  • 触媒
  • プロセス化学およびプロセス工学

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