Alkali metal-supported catalyst
AssigneeMitsui Petrochemical Industries, Ltd.
InventorsKatsuo Taniguchi, Tadaaki Fujimoto, Kenji Saeki
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Abstract
An alkali metal-supported substance comprising a calcination product of a hydrotalcite-like compound having Mg as a divalent metal and a carbonate ion as an anion and an alkali metal supported on the calcination product. When this substance is treated with a gas containing molecular oxygen, part of the alkali metal is converted to its oxide to give a more stable substance. These substances act, for example, as an isomerization catalyst for olefins.
Claims12
An alkali metal-supported substance comprising a calcination product of a hydrotalcite compound represented by the following formula (I)
- (Mg.sub.1-x R.sub.x (OH).sub.2).((CO.sub.3).sub.x/2.mH.sub.2 O)
- wherein R is Al, Cr or Fe, x is a number represented by 0<x<0.34, and m is a number represented by 0.ltoreq.m.ltoreq.5, and an alkali metal supported on the calcination product.
A stabilized alkali metal-suported substance obtained by subjecting to oxidation treatment with a gas containing molecular oxygen an alkali metal-supported substance comprising a calcination product of a hydrotalcite compound represented by the following formula (I)
- (Mg.sub.1-x R.sub.x (OH).sub.2).((CO.sub.3).sub.x/2.mH.sub.2 O)
- wherein R is Al, Cr or Fe, x is a number represented by 0<x<0.34, and m is a number represented by 0.ltoreq.m.ltoreq.5, and an alkali metal supported on the calcination product.
A stabilized alkali metal-supported substance comprising a calcination product of a hydrotalcite compound represented by the following formula (I)
- (Mg.sub.1-x R.sub.x (OH).sub.2).((CO.sub.3).sub.x/2.mH.sub.2 O)
- wherein R is Al, Cr or Fe, x is a number represented by 0<x.ltoreq.0.34, and m is a number represented by 0.ltoreq.m.ltoreq.5, an alkali metal supported on the calcination product, and an oxide of the alkali metal.
Dependencies are inferred from the claim text.