초록 ▼

A catalyst for reforming of methanol to hydrogen and carbon monoxide, which is high in activity, selectivity and durability. The catalyst comprises a granular or monolithic carrier which is made of active alumina at least in its surface regions, at least one metal oxide selected from oxides of the r

A catalyst for reforming of methanol to hydrogen and carbon monoxide, which is high in activity, selectivity and durability. The catalyst comprises a granular or monolithic carrier which is made of active alumina at least in its surface regions, at least one metal oxide selected from oxides of the rare earth metals such as Ce, La, Pr, Nd and Y or from oxides of the titanium family metals such as Ti and Zr deposited on the carrier and at least one catalytic metal of the platinum group such as Pt, Rh and/or Pd, which is deposited on the carrier by pyrolysis of suitable compound of each catalytic metal applied to the carrier as a solution and rendered substantially completely reduced by a subsequent treatment with a solution of a reducing agent such as sodium boron hydride or hydrazine. The metal oxide(s) can be deposited on the carrier by pyrolysis of a suitable salt of the selected metal initially applied to the carrier as a solution.

대표청구항 ▼

A process of preparing a catalyst for reforming a methanol to hydrogen and carbon monoxide, the process comprising the steps of: (a) depositing at least one metal oxide which is an oxide of a metal selected from the group consisting of Ce, La, Pr, Nd and Y on a carrier which comprises active alumina

A process of preparing a catalyst for reforming a methanol to hydrogen and carbon monoxide, the process comprising the steps of: (a) depositing at least one metal oxide which is an oxide of a metal selected from the group consisting of Ce, La, Pr, Nd and Y on a carrier which comprises active alumina over at least substantially the entire surface thereof; (b) impregnating the carrier treated at step (a) with an aqueous solution comprising ammonium thiosulfate and at least one thermally decomposable compound of a catalytic metal of the platinum group; (c) after step (b), drying the carrier so as to reduce moisture content therein to a predetermined level; (d) baking the carrier impregnated with said solution in a steam atmosphere at a temperature between about 500°C. and about 600°C. to decompose said thermally decomposable compound adhering to the carrier to thereby deposit at least one catalytic metal of the platinum group on the carrier; and (e) subjecting the carrier treated at step (d) to a reduction treatment which comprises immersing the carrier in a solution of a reducing agent, such that said catalytic metal deposited on the carrier is rendered substantially completely reduced.