申请人:UBE INDUSTRIES, LTD.
公开号:EP0693473A1
公开(公告)日:1996-01-24
A pivaloylacetic acid ester is prepared at a high yield by decarbonylating a pivaloylpyruvic acid ester in gas or liquid phase in the presence of an inorganic oxide catalyst which comprises aluminum in an amount of 10% by weight or more in terms of aluminum oxide, and preferably is substantially free from heavy metals, for example, Fe, Cu, Ni, Mn, Cr, Mo and Co, and exhibits a high catalytic activity and chemical stability.
新戊酰基乙酸酯是在气相或液相中,在无机氧化物催化剂存在下,通过对新戊酰基丙酮酸酯进行脱羰基化而制备的,该无机氧化物催化剂中铝的含量为氧化铝重量的 10%或以上,并且最好基本上不含重金属,例如铁、铜、镍、锰、铬、钼和钴,并具有较高的催化活性和化学稳定性。