以正丁醛为原料,KF/γ-AL2O3为催化剂合成2-乙基-2-己烯醛(异辛烯醛).对生成的产物2-乙基-2-己烯醛进行气相色谱-质谱分析.并采用浸渍法利用七种不同形貌的γ-AL2O3(三叶草1#、三叶草2#、三叶草3#、球系列1#、球系列2#、球系列3#、球系列4#)制备KF/γ-Al2O3.考察了Al2O3的BET、KF/γ-Al2O3的BET、KF/γ-AL2O3的XRD.

Lactide was the intermediate of PLA synthesized via the ring-opening polymerization.L-lactide was prepared by L-lactic acid as the material,ZnO as the condensation dehydration catalysts,ZSM-5 molecular sieve as the cracking catalyst.The influence of different amounts of ZSM-5 molecular sieve cracking catalyst in L-lactide yield was studied.The determination for physical and chemical properties of products proved that there was no influence for L-lactide after adding the molecular sieve as cracking catalysts.The results showed that the proper amount of molecular sieve catalysts could shorten the reaction time,improve the crude yield of L-lactide,however,the excess of ZSM-5 molecular seive effected the ultimate yield of L-lactide.

研究了用气敏电极测定离子膜制碱工艺二次盐水中氨的分析方法 ,对测定的线性范围作了理论探讨和大量试验 ,pH值为 10 .5～ 11.5时 ,线性范围为 0 .15～ 8.0mg/L ,最低检出限度为 0 .0 85mg/L ,RSD不大于1.5 %