Once the fuel mixture is heated to the operating temperature of the light-off catalyst, the electrically heated catalyst region is turned off because the exothermic reaction in the light-off catalyst monolith generates the heat necessary to sustain the catalytic reaction.Steven D. BurchWilliam H. PettitSteven G. GoebelUS
catalyst is deactivated, a shift of the hot zone is observed downstream to the exit of the catalyst bed. Moving hot zones may appear near the extinction temperature in a catalytic reactor with an ongoing exothermic reaction. In the case of a reversible exothermic reaction the yield of product ...
When the catalyst is deactivated, a shift of the hot zone is observed downstream to the exit of the catalyst bed. Moving hot zones may appear near the extinction temperature in a catalytic reactor with an ongoing exothermic reaction. In the case of a reversible exothermic reaction the yield ...
CO2 methanation is a promising technology to enable the use of CO2 as a resource. Thermal control of CO2 methanation, which is a highly active exothermic reaction, is important to avoid thermal runaway and subsequent degradation of the catalyst. Using th
Draw a potential-energy diagram for an uncatalyzed exothermic reaction. On the same diagram, indicate the change that results on the addition of a catalyst. Discuss the role of a catalyst in changing the rate of reaction.On a potential en...
US4328384 1980年9月29日 1982年5月4日 Mobil Oil Corporation Fluid zeolite catalyst conversion of alcohols and oxygenated derivatives to hydrocarbons by controlling exothermic reaction heatUS4328384 * Sep 29, 1980 May 4, 1982 Mobil Oil Corporation Fluid zeolite catalyst conversion of alcohols and ...
[Also in Division F4] Exothermic chemical reactions are carried out within catalyst-containing tubes 17 extending between headers 13, 14 and surrounded by a shell 11 which is supplied through inlet 20 with a liquid heat-transfer medium which boils as it removes heat from the reaction taking ...
The analysis of the interaction between transport phenomena and chemical reaction inside large-pore catalyst particles needs to include intraparticular convection as an additional mass/heat transfer mechanism. In this work, we describe by a 3D regime diagram the global behavior of a permeable catalyst...
US6437078 2001年2月2日 2002年8月20日 Hehr International Inc. Prepared by the catalyst-free, exothermic reaction of a caprolactone monomer or polycaprolactonepolyol, an aliphatic polyetherpolyamine; and an aliphatic polyisocyanate with less than about one percent of the monomer...
[Also in Division F4] Exothermic chemical reactions are carried out within catalyst-containing tubes 17 extending between headers 13, 14 and surrounded by a shell 11 which is supplied through inlet 20 with a liquid heat-transfer medium which boils as it removes heat from the reaction taking ...