| http://www.w3.org/ns/prov#value | - The catalyst may contain an added metal which is gallium or any of the various suitable metals in Groups I through VIII of the Periodic Table including zinc, platinum, rhenium, cobalt,titanium, tellurium, sodium, nickel, chromium, aluminum, copper, palladium, calcium and rare earth metals.It would be advantageous to have a zeolite-type catalyst which maintained relatively constant selectivity for
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