Treatment of molecular sieves with silicon containing compounds

Details Treatment of molecular sieves with silicon containing compounds Treatment of molecular sieves with silicon containing compounds

2005-01-11

2005-01-11

Wood, Elizabeth D. (Department: 1755)

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Phosphorus or compound containing same

C502S060000, C502S063000, C502S064000, C502S071000, C502S077000, C502S085000, C502S208000

Reexamination Certificate

active

06841510

ABSTRACT:
This invention is directed to a molecular sieve composition or a catalyst containing molecular sieve which has a relatively high residual silica index, preferably at least about 1.5. The molecular sieve or catalyst can be made by contacting a template-containing molecular sieve with a silicon containing material having an average kinetic diameter that is larger than the average pore diameter of the sieve or catalyst, and heating to leave residual silica at the sieve or catalyst surface. The molecular sieve or catalyst is particularly effective in making an olefin product from an oxygenate feedstock.

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