Modified solid catalyst materials

Details Modified solid catalyst materials Modified solid catalyst materials

1974-08-28

1976-09-14

Dees, Carl F.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252455Z, 252463, B01J 2906, B01J 2308

Patent

active

039805867

ABSTRACT:
Refractory metal oxide solid materials, characterized by the presence of surface hydroxyl groups, which have undergone modification by being subjected to the sequential steps of (1) silylating, (2) calcining and (3) steaming are provided. Said silylating step is accomplished by contacting said solid material with an organic-or halogen-substituted silane at a temperature of between about 25.degree.C and about 500.degree.C to effect bonding between said silane and the surface hydroxyl groups of said solid. Said calcining step is accomplished by heating the resulting silylated solid at a temperature and for a time sufficient to remove substantially all of any introduced organic or halogen substituent. Said steaming step is accomplished by contacting the resulting calcined solid with an atmosphere containing at least 2 percent by volume of steam at a temperature of between about 900.degree.F and about 1600.degree.F for at least about 1/2 hour.
Organic compound conversion, e.g. hydrocarbon compound conversion, such as, for example, cracking with one or more of said modified refractory metal oxide solid materials as a catalyst is also provided.

REFERENCES:
patent: 3140253 (1964-07-01), Plank et al.

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