Activated alumina Claus catalyst having increased sodium oxide c

Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide

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423576, B01J 2104, B01J 2304

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active

045686645

ABSTRACT:
An improved Claus catalyst comprising activated alumina in which sodium oxide concentration is controlled to achieve increased sulfur conversion. Sodium oxide is present in an amount greater than 0.50 wt % (1100.degree. C. calcined basis), the remainder being activated alumina. Specific surface area is greater than 100 m.sup.2 /g (BET). In a preferred embodiment, sodium oxide content is controlled in the range 1.0 to 2.5 wt %. The catalyst preferably has a surface area greater than 300 m.sup.2 /g (BET) and an LOI (hydroxyl content as determined by heating from 400.degree. to 1100.degree. C.) between 2.0 and 6.0 wt %.

REFERENCES:
patent: 3725531 (1973-04-01), Pearson et al.
patent: 3845197 (1974-10-01), Renault et al.
patent: 3978004 (1976-08-01), Daumas et al.
patent: 4051072 (1977-09-01), Bedford et al.
patent: 4054642 (1977-10-01), Daumas et al.
patent: 4141962 (1979-02-01), Dupuy et al.
Pechiney-Saint-Gobain Product Data on DR Catalyst.
Kaiser Chemicals Product Data on S-501 Alumina.
Kaiser Chemicals Product Data on S-201 Alumina.
Kaiser Chemicals Product Data on S-701 Alumina.
"DR Catalyst for Sulphur Recovery from H.sub.2 S by Claus Catalytic Process", Technical Documentation of Pechiney-Saint-Gobain, Nov. 20, 1970, 2 pages.
"CR Catalyst," Technical Documentation of Pechiney-Saint Gobain, Nov. 20, 1970, two pages.

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