摘要:
Process for the preparation of a catalyst comprising the steps of: (a) combining solid acid particles with a binder to form a catalyst precursor; (b) calcining the catalyst precursor at a temperature in the range of 400-575°C, (c) impregnating the calcined catalyst precursor with a solution of a Group VIII noble metal and NH 4 + ions; and (d) calcining the impregnated particles at a catalyst temperature in the range of 400-500°C. The use of two calcination steps in the above temperature ranges results in alkylation catalysts with improved performance.
摘要:
Novel silicoaluminophosphate molecular sieve compositions comprising SAPO-11 and SAPO-41 with at least about 5 wt% of in s/Yw-produced amorphous portion. Such compositions can be uncalcined or calcined and novel processes for their preparation are described. These compositions, when loaded or impregnated with a catalytically active species such as a Group VIII noble metal are novel, and are excellent hydroisomerization catalysts.
摘要:
A solid alkylation catalyst having a hydrogenation metal and a solid acid in the form of a rare earth exchanged molecular sieve, wherein the catalyst is at least characterized by a porosity of less than 0.20 ml/g in pores below 100 nm in diameter, and a total porosity of greater than 0.30 ml/g. A process for alkylation using the catalyst is also described.
摘要:
The invention relates to a process for alkylating a hydrocarbon feed which comprises contacting the hydrocarbon feed to be alkylated with an alkylation agent in the presence of a catalyst comprising a solid acid, a hydrogenation metal, and 1.5 - 6 wt% of water, measured as the loss on ignition at 600°C. The presence of 1.5 - 6 wt% of water results in a higher activity and a higher alkylate quality compared with a comparable but drier catalyst.
摘要:
Novel silicoaluminophosphate molecular sieve compositions comprising SAPO-11 and SAPO-41 with at least about 5 wt% of in s/Yw-produced amorphous portion. Such compositions can be uncalcined or calcined and novel processes for their preparation are described. These compositions, when loaded or impregnated with a catalytically active species such as a Group VIII noble metal are novel, and are excellent hydroisomerization catalysts.