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AssigneesKorea Advanced Institute of Science and Technology, Lucky, Ltd.
InventorsSeong-Ihl Woo, Won-Choon Choi, Kwang-Ho Park, Jin-Do Kim
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The present invention relates to a novel oxide catalyst, more specifically, a novel modified magnesium oxide catalyst which is highly active and selective for ortho-alkylation of phenol. The catalysts for phenol alkylation of the invention are represented as Mg.sub.a Mn.sub.b L.sub.c T.sub.d Q.sub.e O.sub.x . wherein: L is vanadium or chromium; T is alkali metal, alkali earth metal, lead, bisumth, cobalt, aluminum, silicon., gallium, germanium or molybdenum; Q is antimony, cesium or iron; b/a=0 to 0.35(atomic molar ratio); c/a=0.01 to 0.35(atomic molar ratio); d/a=0 to 0.35(atomic molar ratio); e/c=0.1 to 10(atomic molar ratio); and, x is determined by oxidation state of each component.
A magnesium oxide catalyst for phenol alkylation comprising magnesium, vanadium and manganese.
A magnesium oxide catalyst for phenol alkylation comprising magnesium, chromium and manganese.
A magnesium oxide catalyst for phenol alkylation comprising magnesium, 0 to 35 mol % of manganese and 0.1 to 35 mol % of at least one metal selected from the group consisting of alkaline metal, alkali earth metal, cerium, bismuth, cobalt, aluminum, gallium, germanium, iron and antimony, based on moles of magnesium.
A magnesium oxide catalyst for phenol alkylation comprising magnesium, and 1 to 10 molar ratio of Mg/Metal of at least one metal selected from the group consisting of iron, cobalt, aluminum and cerium.
A magnesium oxide catalyst composition for phenol alkylation represented as:
Dependencies are inferred from the claim text.