✦ LIBER ✦

Coal liquefaction catalysis: Iron pyrite and hydrogen sulphide

✍ Scribed by Robert M. Baldwin; Stephen Vinciguerra

Publisher: Elsevier Science
Year: 1983
Tongue: English
Weight: 427 KB
Volume: 62
Category: Article
ISSN: 0016-2361
DOI: 10.1016/0016-2361(83)90216-8

No coin nor oath required. For personal study only.

✦ Synopsis

An unreactive hvC bituminous coal has been hydrogenated in a batch-stirred reactor using pyrite, hydrogen sulphide, and pyrite+ hydrogen sulphide as catalysts. The data indicate that H,S is an active homogeneous catalyst for coal liquefaction, and suggest that pyrite may be acting indirectly as a catalytic agent via H2S release.

📜 SIMILAR VOLUMES

Alternative interpretation of coal lique

Alternative interpretation of coal liquefaction catalysis by pyrite

✍ Joseph M. Lambert Jr. 📂 Article 📅 1982 🏛 Elsevier Science 🌐 English ⚖ 275 KB

Many authors have asserted that pyrite is a catalyst for the hydroliquefaction of coal. Catalysis by such a low surface area substance, which is not regenerated, seems doubtful. Evidence is presented suggesting that the H2S, produced from pyrite decomposition, is responsible for the observed catalyt

Coal liquefaction by colloidal iron sulp

Coal liquefaction by colloidal iron sulphide catalyst

✍ Yukimichi Nakao; Shinichi Yokoyama; Yosuke Maekawa; Kyoji Kaeriyama 📂 Article 📅 1984 🏛 Elsevier Science 🌐 English ⚖ 232 KB

Chemistry of hydrogen sulphide under coa

Chemistry of hydrogen sulphide under coal liquefaction conditions: 1. Modelling hydrogen transfer catalysis

✍ Albert S. Hirschon; Karen Sundback; Richard M. Laine 📂 Article 📅 1985 🏛 Elsevier Science 🌐 English ⚖ 420 KB

The work reported here represents initial attempts to develop a complete kinetic and mechanistic understanding of the reaction chemistry of H,S under coal liquefaction conditions, using both model systems and coal. Hydrogen sulphide was found to promotejcatalyse the transfer of hydrogen from tetrali

The effects of iron sulphide surface are

The effects of iron sulphide surface area variations on coal liquefaction

✍ Frances V. Stohl 📂 Article 📅 1983 🏛 Elsevier Science 🌐 English ⚖ 590 KB

The purpose of this work was to determine the effects of surface area variations of iron sulphides on coal liquefaction. Several iron sulphides were synthesized including pyrites (Fe!&) with 46.6 wt% Fe, pyrrhotites (Fe,.,S) with -60 wt% Fe and irortsulphur compounds of unknown composition. Surface

Catalytic activities of sulphate and sul

Catalytic activities of sulphate and sulphide in sulphur-promoted iron oxide catalyst for coal liquefaction

✍ Takeshi Kotanigawa; Shinichi Yokoyama; Mitsuyoshi Yamamoto; Yosuke Maekawa 📂 Article 📅 1989 🏛 Elsevier Science 🌐 English ⚖ 424 KB

Hydrogenation-dehydrogenation of pyrenes

Hydrogenation-dehydrogenation of pyrenes catalysed by sulphided cobalt-molybdate at coal liquefaction conditions

✍ Keith P. Johnston 📂 Article 📅 1984 🏛 Elsevier Science 🌐 English ⚖ 727 KB

The hydrogenation and dehydrogenation kinetics of pyrene and hydropyrenes were studied in batch microreactors, both with and without catalyst, as a function of time, temperature, pressure and catalyst concentration. Under catalytic conditions at 648 K and-dihydropyrene and pyrene reached equilibriu