Catalyst for ortho-alkylation of phenols, a precursor thereof, and production of ortho-alkylated phenols by use of said catalyst
AssigneeHonshu Chemical Industry Co., Ltd.
InventorsShunji Yago, Takashi Kakiuchi, Keiji Arimatsu, Fujihisa Matsunaga
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Abstract
There is disclosed a catalyst for ortho-alkylation of phenols obtained by calcination of a catalyst precursor comprising a dry mixture of: (a) manganese oxalate; (b) phenolic resin fine particles; and (c) at least one magnesium compound selected from the group consisting of basic magnesium carbonate and magnesium hydroxide. There is further disclosed a process for producing ortho-alkylated phenols by the gas phase reaction between an alkyl alcohol and a phenol in the presence of the ortho-alkylation catalyst defined above.
Claims12
A catalyst for ortho-alkylation of phenols obtained by calcination of a catalyst precursor which comprises a dry mixture of:
- (a) manganese oxalate;
- (b) phenolic resin fine particles having a particle diameter of 0.1-100 .mu.m which are obtained by condensation reaction between phenol and formaldehyde;
- and
- (c) at least one magnesium compound selected from the group consisting of basic magnesium carbonate and magnesium hydroxide;
- wherein the content of manganese oxalate is 0.1-10% by weight and the content of phenolic resin fine particles is 0.1-20% by weight, each based on the amount of the magnesium compound.
A process for producing ortho-alkylated phenols by the gas phase reaction between an alkyl alcohol and a phenol in the presence of an alkylating catalyst, said catalyst being obtained by calcination of a catalyst precursor which comprises a dry mixture of:
- (a) manganese oxalate;
- (b) phenolic resin fine particles having a particle diameter of 0.1-100 .mu.m which are obtained by condensation reaction between phenol and formaldehyde;
- and
- (c) at least one magnesium compound selected from the group consisting of basic magnesium carbonate and magnesium hydroxide;
- wherein the content of manganese oxalate is 0.1-10% by weight and the content of phenolic resin fine particles is 0.1-20% by weight, each based on the amount of the magnesium compound.
A catalyst precursor convertible into a catalyst for ortho-alkylation of phenols by calcination, said catalyst precursor comprising a dry mixture of:
- (a) manganese oxalate;
- (b) phenolic resin fine particles having a particle diameter of 0.1-100 .mu.m which are obtained by condensation reaction between phenol and formaldehyde;
- and
- (c) at least one magnesium compound selected from the group consisting of basic magnesium carbonate and magnesium hydroxide;
- wherein the content of manganese oxalate is 0.1-10% by weight and the content of phenolic resin fine particles is 0.1-20% by weight, each based on the amount of the magnesium compound.
Dependencies are inferred from the claim text.