Process and catalyst for hydrohalogenation of hydrocarbons

Organic compounds -- part of the class 532-570 series – Organic compounds – Halogen containing

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C07C 1716

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active

051091380

ABSTRACT:
A process for hydrohalogenating methanol with a hydrogen halide using a catalyst having an initial zone of lower activity and subsequent zones of higher activity so that coke formation and pressure drop are decreased and catalyst life is increased while overall high catalyst activity is maintained. One example of such a process uses a low surface area amorphous alumina in an initial zone and then progressively higher surface area alumina in subsequent zones.

REFERENCES:
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patent: 4464880 (1984-08-01), Grunbein et al.
patent: 4935565 (1990-06-01), Harley et al.
Grinberg et al., "Characteristics of the Thermal Deactivation of Deposited Catalyst for Methyl Chloride Synthesis", Kinetikai Kataliz, vol. 28, No. 5, pp. 1273-1275, Sep.-Oct. 1987.
Glazunova et al., "Formation of Zinc Chloride Catalysts Based on .sub..gamma. --Al.sub.2 O.sub.3 ", Kinetikai Kataliz, vol. 28, No. 5, pp. 1178-1182, Sep. -Oct. 1987.
Glazunova et al., "Study of Formation of ZnCl.sub.2 -NaCl-y-Al.sub.2 O.sub.3 and ZnCl.sub.2 -KCl-.sub.y -Al.sub.2 O.sub.3 Catalytic Systems", Kinetikai Kataliz, vol. 28, No. 5, pp. 1183-1187, Sep.-Oct., 1987.

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