Bismuth molybdate-based catalysts, method of preparing...

Details Bismuth molybdate-based catalysts, method of preparing... Bismuth molybdate-based catalysts, method of preparing...

2011-08-23

2011-08-23

Nguyen, Tam M (Department: 1771)

Chemistry of hydrocarbon compounds

Unsaturated compound synthesis

Diolefin product

C585S629000, C585S630000, C585S631000, C502S305000, C502S311000

Reexamination Certificate

active

08003840

ABSTRACT:
This invention relates to a bismuth molybdate catalyst, a preparation method thereof, and a method of preparing 1,3-butadiene using the same, and to a bismuth molybdate catalyst, a preparation method thereof, and a method of preparing 1,3-butadiene using the same, in which 1,3-butadiene can be prepared through oxidative dehydrogenation directly using a C4 mixture including n-butene and n-butane as a reactant in the presence of a mixed-phase bismuth molybdate catalyst including α-bismuth molybdate (Bi2Mo3On) and γ-bismuth molybdate (Bi2MoO6). According to this invention, the C4 raffinate, containing many impurities, is used as a reactant, without an additional n-butane separation process, thus obtaining 1,3-butadiene at high yield. Unlike complicated multicomponent-based metal oxides, the catalyst of the invention has simple constituents and synthesis routes, and can be easily formed through physical mixing, and thus is very advantageous in assuring reproducibility and can be directly applied to commercial processes.

REFERENCES:
patent: 3764632 (1973-10-01), Takenaka et al.
patent: 3966823 (1976-06-01), Takenaka et al.
patent: 3998867 (1976-12-01), Takenaka et al.
patent: 4322358 (1982-03-01), Bither, Jr. et al.
patent: 4415482 (1983-11-01), Ebner
patent: 4504692 (1985-03-01), Arakawa et al.
patent: 4595788 (1986-06-01), Yamamoto et al.
patent: 2003/0162981 (2003-08-01), Kourtakis et al.
patent: WO-9746506 (1997-12-01), None
Cares et al., Ferrite Spinels as Catalysts in the Oxidative Dehydrogenation of Butenes,,Journal of Catalysis 23, pp. 193-203 (1971).
Rennard et al.,Oxidative Dehydrogenation of Butenes over Ferrite Catalysts, Journal of Catalysis 21, pp. 282-293 (1971).
Bleijenberg et al., Catalytic Oxidation of 1-Butene over Bismuth Molybdate Catalysts,Journal of Catalysis 4, pp. 581-585 (1965).
Batist, et al., The Catalytic Oxidation of 1-Butene over Bismuth Molybdate Catalysts,Journal of Catalysis 5, pp. 55-64 (1965).
Madeira et al.,Catalytic Oxidate of Dehyrdogenation of n-Butane, Catalysis Reviews, 44(2), pp. 247-286 (2002).
Toledo et al.,Oxidative Dehydrogenation of 1-butene to Butadiene on α-Fe2O3/ZNAl2O4and ZnFexAl2-xO4Catalysts, Catalysis Letters 30, pp. 279-288 (1995).
Linn et al., Oxidation of 1-Butene over Bismuth Molybdates and Bismuth Iron Molybdate,Journal of Catalysis, 41, pp. 134-139 (1976).
Grasselli, R.K.,Ammoxidation, Handbook of Heterogenous Catalysts, Organic Reactions, vol. 5, pp. 2302-2326.
Welch et al.,Butadiene via Oxidative Dehydrogenation, Petrochemical Developments, pp. 99-104 (1978).
Grzybowska et al.,The Chemistry of Bi—Mo Oxide Catalysts, Journal of Catalysis, 25, pp. 25-32 (1972).
Batist et al.,The Catalytic Oxidation of 1-Butene over Bismuth Molybdate Catalysts, Journal of Catalysis, 12, pp. 45-60 (1968).
Soares et al.,Synergy effects between β and γ phases of bismuth molybdates in the selective catalytic oxidation of 1-butene, Applied Catalysis A: General 253 pp. 191-200 (2003).
Bakshi et al.,Catalytic Properties of System SnO2:Sb2O4in the Oxidative Dehyrdrogenation of n-Butenes to Butadiene, vol. 7, p. 177 (1967).
Boutry,et al., Influence of the Degree of Crystallinity and of the Composition on the Activity of MoO3-Bi2O3Catalysts, Journal of Catalysis 13, pp. 75-82 (1969).

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