摘要:
This invention relates to a novel carbonylation process for the production of aromatic carboxylic acids. More particularly, this invention relates to a process for the carbonylation of aromatic iodides with carbon monoxide in the presence of a nickel catalyst in a hydrocarbon carboxylic acid reaction medium to prepare aromatic carboxylic acids.
摘要:
Disclosed are TiO.sub.2 pigments treated to decrease their photosensitizing propensity and their tendency to degrade polymeric materials. Commercial TiO.sub.2 pigments, both anatase and rutile, treated according to the present invention with manganous, cobaltous or cerous salts, particularly acetate, are effectively desensitized.
摘要:
Disclosed is a process comprising preparing a product stream rich in naphthalene and 2-monoiodonaphthalene comprising contacting hydrogen and a feed stream containing iodonaphthalenes selected from the group consisting of monoiodonaphthalene, diiodonaphthalene and triiodonaphthalene and mixtures thereof with an X or Y type zeolite containing an ion selected from the group consisting of sodium, potassium and rubidium and a metal selected from the group selected from the group consisting of palladium, platinum, rhodium and ruthenium.
摘要:
Disclosed is a process for the co-production of aromatic carboxylic esters and alkyl iodides by the carbonylation of aromatic iodides in the presence of an alkanol and a palladium catalyst.
摘要:
Process for the preparation of ethylidene diacetate by hydrogenating acetic anhydride in the presence of a ruthenium on alumina catalyst and methyl iodide.
摘要:
Process for the preparation of ethylidene diacetate and/or ethyl acetate by hydrogenating acetic anhydride in the presence of a homogeneous ruthenium catalyst, methyl iodide and, optionally, lithium iodide. The process can also be utilized to hydrogenate mixtures of acetic anhydride and ethylidene diacetate to produce ethyl acetate.
摘要:
Disclosed is a process for the co-production of aromatic carboxylates and alkyl iodides by the carbonylation of aromatic iodides in the presence of an alkanol and a nickel catalyst.
摘要:
Process for the preparation of ethylidene diacetate by hydrogenating acetic anhydride in the presence of a heterogeneous palladium catalyst and a silica-alumina material.