Chemistry of hydrocarbon compounds – Plural serial diverse syntheses – Including alkylation to produce branched-chain paraffin
Patent
1991-06-21
1992-07-28
Pal, A.
Chemistry of hydrocarbon compounds
Plural serial diverse syntheses
Including alkylation to produce branched-chain paraffin
585520, 585530, 585533, 585643, 585648, 585653, 423277, C07C 200
Patent
active
051342413
ABSTRACT:
A process for upgrading olefinic feedstocks containing lower olefins employing new synthetic catalyst of ultra-large pore crystalline material. The new crystalline material exhibits unusually large sorption capacity demonstrated by its benzene adsorption capacity of greater than about 15 grams benzene/100 grams at 50 torr and 25.degree. C., a hexagonal electron diffraction pattern that can be indexed with a d.sub.100 value greater than about 18 Angstrom Units and a hexagonal arrangement of uniformly sized pores with a maximum perpendicular cross section of at least about 13 Angstrom units. A multistage process is provided for catalytic oligomerization of lower olefin which comprises contacting olefinic feedstock under catalytic conversion conditions with acid metallosilicate solid catalyst having the structure of MCM-41 with hexagonal honeycomb lattice structure consisting essentially of uniform pores in the range of about 20 to 100 Angstroms. The oligomerization reaction is very selective, especially when conducted at temperature of about 40.degree. to 250.degree. C., yielding branched intermediate olefins. Low severity reaction permits excellent conversio of lower olefins at pressure of about 100-13,000 pKa range and moderate space velocity. Intermediate oligomers produced over MCM-41, when reacted under cracking/disproportionation conditions yield etherifiable C.sub.4 + isoalkenese in good yield.
REFERENCES:
patent: 3884835 (1975-05-01), Vaughan
patent: 4091079 (1978-05-01), Vaughan
patent: 4673559 (1987-06-01), Derouane et al.
patent: 4791088 (1988-12-01), Chu et al.
patent: 4849186 (1989-07-01), Beech et al.
patent: 4880611 (1989-11-01), von Ballmoos et al.
patent: 4969987 (1990-11-01), Le et al.
patent: 5057296 (1991-10-01), Beck
"An X-Ray structural study of cacoxenite, a mineral phosphate", Paul B. Moore Nature, vol. 306, Nov. 24, 1983.
"Low-Temperature Oligomerization of Small Olefins on Zeolite H-ZSM-5. An investigation with High-Resolution Solid-State .sup.13 C-NMR", J. P. van den Berg et al., Journal of Catalysis 80, 130-138 (1983).
"Reaction of Small Olefins on Zeolite H-ZSM-5. A Thermogravimetric Study at Low and Intermediate Temperatures", J. P. van den Berg et al., Journal of Catalysis 80, 139-144 (1983).
Le Quang N.
Thomson Robert T.
Yokomizo Grant H.
Achutamurthy P.
McKillop Alexander J.
Mobil Oil Corporation
Pal A.
Speciale Charles J.
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