Process for producing alkenes oxygenates by using supported heteropolyacid catalysts

摘要

Process for producing alkene(s) from an oxygenate feedstock in a reactor by dehydration in the presence of a supported heteropolyacid catalyst. The pore volume of the supported heteropolyacid catalyst satisfies the following formula:
PV>0.6−0.3[HPAloading/Surface Area of Dried Catalyst]where;PV is the Pore Volume of the dried supported heteropolyacid catalyst (measured in ml/g catalyst); HPA loading is the amount of heteropolyacid present in the dried supported heteropolyacid catalyst (measure in micro moles/g); and Surface Area of Dried Catalyst is the surface area of the dried supported heteropolyacid catalyst (measured in m2/g).

主权项

1. A dehydration process for producing alkene(s) from an oxygenate feedstock comprising at least one monohydric aliphatic alcohol having one or more alpha hydrogen(s) and/or corresponding ether, comprising contacting the oxygenate feedstock with a supported heteropolyacid catalyst selected from the group consisting of silicotungstic acid, silicomolybdic acid and phosphomolybdic acid, in a dehydration reactor to produce the alkene(s), wherein the pore volume of the supported heteropolyacid catalyst suffice the following formula:
PV>0.6−0.3[HPAloading/Surface Area of Dried Catalyst], where: PV is the Pore Volume of the dried supported heteropolyacid catalyst (measured in ml/g catalyst); HPA loading is the amount of heteropolyacid present in the dried supported heteropolyacid catalyst (measured in micro moles/g); Surface Area of Dried Catalyst is the surface area of the dried supported heteropolyacid catalyst (measured in m2/g).