摘要:
A method for a solid acid catalyst which contains sulfuric acid, exhibits a satisfactorily high activity even when formed into moldings, and also has a satisfactory mechanical strength and an easiness to handle sufficient to practical operation. The carrier of the catalyst is composed of a part comprising zirconia and/or zirconia hydrate and a part comprising alumina and/or alumina hydrate, and the method (a) comprises a step preparing a carrier which has a pore diameter distribution from 0.05 to 10 νm showing a peak in the range of 0.05 to 1 νm and a step supporting sulfuric acid on the carrier, or (b) comprises a step preparing a carrier which has a pore volume of 0.05 to 0.5 ml/g in the range of pore diameter of 0.05 to 1 νm and a pore volume less than 0.05 ml/g in the range of pore diameter more than 1 νm and up to 10 νm and a step supporting sulfuric acid on the carrier.
摘要:
A method for isomerization of a hydrocarbon which comprises providing a solid acid catalyst comprising a carrier containing a part comprising zirconia and/or hydrated zirconia and sulfuric acid carried thereon, and contacting the catalyst with a hydrocarbon material having a water content of 5 ppm by weight or less, preferably 1 ppm or less, to thereby produce isomerized hydrocarbons; and a system for practicing the method. The isomerization method does not need the introduction of a chlorine-containing compound during the course of isomerization and uses a catalyst having high activity. The isomerization system comprises a dehydrating apparatus for the material, a vessel for catalytic reaction filled with the above catalyst, a separator for separating a reaction product into the hydrogen to be recycled and a hydrocarbon product, and a compressor which compresses the recycle hydrogen to feed it to the vessel for catalytic reaction.