Maintaining effective molar ratio of HF to metal pentafluoride i

Details Maintaining effective molar ratio of HF to metal pentafluoride i Maintaining effective molar ratio of HF to metal pentafluoride i

1976-12-29

1977-12-27

Crasanakis, George

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Reforming

260666P, 260672T, 260676R, 26068347, 26068368, C07C 528, C07C 900, C07C 312, C10G 3506

Patent

active

040653811

ABSTRACT:
A hydrocarbon phase separated from a hydrocarbon conversion process is solvent extracted with anhydrous liquid HF to separate metal pentafluoride which is carried over into the hydrocarbon phase. The extract of HF and metal fluoride is then combined with the catalyst phase (HF and metal pentafluoride) and stripped with hydrogen to reduce the molar ratio of HF to metal pentafluoride to the level that HF + metal pentafluoride catalyst is utilized in the hydrocarbon conversion process. The metal pentafluoride is TaF.sub.5 and/or NbF.sub.5 and the hydrocarbon conversion may involve isomerization, alkylation with olefins and reactions of a paraffin with another paraffin.

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patent: 4025577 (1977-05-01), Siskin et al.

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