Sulfur Problems in the Direct Catalytic Production of Methane from Coal-Steam Reactions

Chemical processing in high-pressure aqueous environments. 2. Development of catalysts for gasification

“…Sintering of these nickel catalysts has been quantified even in operations at 300-380 °C (Kelley et al, 1983). Sulfur poisoning of nickel metal catalysts is a concern in all applications and especially in direct conversion systems (Cox et al, 1975).…”

Chemical Processing in high-pressure aqueous environments. 3. Batch reactor process development experiments for organics destruction

“…Different nickel catalysts are used at lower temperatures and in high-pressure reactors for methanation of carbon monoxide/hydrogen synthesis gas (Sirohi, 1975). A single-step reforming and methanation for conversion of coal to methane was studied in the early 1970s as a synfuels development project (Cox et al, 1975). Our process development activities have taken the concept one step further and utilized a higher pressure liquid water environment for processing wet feedstocks.…”

Catalysis in biomass gasification

“…The nickel catalysts were eventually deactivated by the sulfur in the coal. Several approaches for alleviating the problem were studied but none was completely successful (Cox and Sealock 1974).…”