Catalytic combustion of low heat value gas. 1. Substoichiometric combustion with supported platinum catalysts

Catalytic combustion of low heat value gas. 2. Reduction of carbon monoxide produced under substoichiometric combustion

“…Clearly, platinum catalysts satisfy all of the criteria except for CO production. Carbon monoxide levels could be decreased by reducing the Pt metal loading (Madgavkar et al, 1981) on a catalyst and/or by using a different preparation technique (which probably affected Pt dispersion); however, the observed decrease was small and not acceptable. Reducing the metal loading also affected the activity of the catalyst, and an increase in LOT was observed with these modifications.…”

“…The other operated at elevated pressure; its schematic is shown in Figure 2. Both units and the operating procedure were described in the first paper (Madgavkar et al, 1981). The reactors, catalyst support, materials, analytical equipment, and methods, etc., were also described in that paper.…”

“…In the first paper (Madgavkar et al, 1981), a number of experimental findings of substoichiometric combustion of a LHV gas with supported platinum catalysts were discussed. The main observations were as follows.…”

“…Generation of high levels of carbon monoxide is undersirable for environmental reasons. In fact, as discussed elsewhere (Kaye et al, 1979; Madgavkar et al, 1981), the primary objective of a process where this concept would be utilized is to recover thermal energy of LHV gas while combusting the air pollutants in the gas. It is preferred that the uncombusted exhaust products be mainly hydrocarbons, such as methane.…”

“…It is preferred that the uncombusted exhaust products be mainly hydrocarbons, such as methane. Thus, a major objective of the present work was to minimize carbon monoxide production, having understood the phenomenon of its formation (Madgavkar et al, 1981).…”