Hydrochlorination, reviews

According to Saito(Ref 7), the acetylene trimers obtained as byproducts in the prepn of CHa CH. C CH by condensation of acetylene are expl. They can be stabilized by hydrochlorination in the presence of a complex salt of CuCl and NH,C1 to yield additive compds contg 1 or 2 mols of HC1, from which they are separated by distn. Nakagawa(Ref 8) reviews the chemistry of poly acetylenes and gives 25 references. Polymerization of acetyl-... 

The following discussion examines the role of the two materials under consideration. Section 2 reviews fundamental issues connected with the role of fluorinated chromia as an active catalyst for a variety of reactions Section 3 considers physicochemical attributes of the acid site distribution associated with rj-alumina catalysts as applied to a single reaction, namely the synthesis of methyl chloride via the hydrochlorination of methanol. 

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