Material based on tungsten carbide(s), catalyst and process usef

Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Inorganic carbon containing

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564421, B01J 2722, C07C20900

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active

056460856

ABSTRACT:
The present invention relates to a process and a catalyst for hydrogenation of aromatic nitro or nitroso (nitrosated) compounds. The process, useful in hydrogenation, especially in the liquid phase, of compounds, nitroaromatic ones in particular, is defined in that the said compound is hydrogenated in the presence of tungsten carbide, the partial pressure of hydrogen being at least equal to two atmospheres (2.times.10.sup.5 pascals). The process also has application to organic synthesis.

REFERENCES:
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patent: 4522708 (1985-06-01), Leclercq et al.
patent: 4851206 (1989-07-01), Boudart et al.
patent: 5139987 (1992-08-01), Ledoux et al.
Kinetics of the Liquid-Phase Hydrogenation of Aromatic Nitro-Compounds in the Presence of Tungsten Carbide Catalyst, Gyorgy Horanyi et al., Journal Of The Chemical Society, 8:827-829 (1975) no month available.
Selective Catalytic Behavior of Tungsten Carbide in the Liquid-Phase Hydrogenation of Organic Compounds, Gyorgy Vertes et al., Journal Of The Chemical Society, 10:1400-1402 (1973) no month available.
Tungsten Carbide as a Catalyst for Liquid (aqueous) Phase Heterogeneous Catalytic Hydrogenation, Horanyi et al., Chemical Abstracts, 78(25):159108y (1973) no month available.
Selective Catalytic Hydrogenation of Nitro Compounds and Quinones, Horanyi et al., Chemical Abstracts, 81(7):37392c (1974) no month available.
Application of Tungsten Carbide and Tungsten Oxide in Liquid-Phase Catalytic Hydrogenation, Vertes et al., Chemical Abstracts, 81(8):41902m (1974) no month available.
Control of the Catalytic Activity of Tungsten Carbides. III. Activity for Ethylene Hydrogenation and Cyclohexane Dehydrogenation, Vidick et al., Chemical Abstracts, 106(25):213251b (1987) no month available.

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