Ha has functional groups such as hydroxyl, carboxyl and N-acetyl, therefore, it can be modified by cross-linking, esterification, graft, molecule modification and composition.
HA具有羟基、羧基和乙酰胺基等官能团，可通过交联、酯化、接枝、分子修饰和复合等方法进行改性。
The esterification reaction of propionic acid with n-pentanol was studied by using novel aluminophosphate and silicoaluminophosphate molecular sieves as catalysts.
用新型磷酸铝分子筛和硅磷酸铝分子筛作催化剂，对丙酸和正戊醇液—固相酯化反应进行了研究。
The amyl pentanoate was synthesized by the esterification reaction of n-pentanol with pentanoic acid using aluminophosphate molecular sieve as a catalyst.
首次用磷酸铝分子筛催化戊酸与正戊醇的酯化反应合成了戊酸正戊酯。
Copper methanesulfonate was synthesized and used as a catalyst in the esterification of n-butyric acid with isoamyl alcohol.
合成了甲烷磺酸铜，研究了其催化丁酸与异戊醇的酯化反应。
The catalyst could also be used to catalyze esterification of alcohol, isopropyl alcohol, n-butyl alcohol and n-pentyl alcohol with hexoic acid.
该催化剂亦能用于乙醇、异丙醇、正丁醇、正戊醇与己酸的酯化反应。
The tri-n-butyl citrate was synthesized by esterification of citric acid with butyl alcohol in the catalysis of sodium bisulfate.
在一水硫酸氢钠催化下由柠檬酸和正丁醇合成了柠檬酸正丁酯。
The catalyst has relatively high catalytic activity on the esterification of citric acid and n-butanol.
本发明所用的催化剂对柠檬酸和正丁醇的酯化反应有较高的催化活性。
The catalytic activities for esterification of acetic acid and n-butanol have been investigated.
以乙酸和正丁醇的酯化反应为探针反应，考察了固体超强酸催化剂的催化活性。
The catalytic activities for esterification of acetic acid and n-butanol have been investigated.
以乙酸和正丁醇的酯化反应为探针反应，考察了固体超强酸催化剂的催化活性。
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