[an error occurred while processing this directive]
化学工业与工程
 首页 |  在线投稿 |  期刊介绍 |  编 委 会 |  投稿指南 |  期刊订阅 |  下载中心 |  出版伦理 |  联系我们 |  English
��ѧ��ҵ�빤�� 2008, Vol. 25 Issue (6) :508-511    DOI:
���� ����Ŀ¼ | ����Ŀ¼ | ������� | �߼����� << | >>
11-��п�Ӷ����δ߻��ϳ���������
�����;
���������ѧ��ѧ�뻯ѧ����ѧԺ;
Synthesis of Ethyl Acetate by 11-Tungstozincic Heteropoly Acid Catalyst
SHAN Qiu-jie(School of Chemistry and Chemical Engineering,Qiqihar University,Qiqihar 161006,Heilongjiang Province,China)
(School of Chemistry and Chemical Engineering,Qiqihar University,Qiqihar 161006,Heilongjiang Province,China

ժҪ
�����
�������
Download: PDF (202KB)   HTML 1KB   Export: BibTeX or EndNote (RIS)      Supporting Info
ժҪ �ϳ���K8[CdZnW11O39(H2O)]��K8[NiZnW11O39(H2O)]��K8[CuZnW11O39(H2O)]3�־���Keggin�ṹ����п�������Ӷ����δ߻���,����ˮ�Ҵ��ͱ�����Ϊԭ��,�߻��ϳ�����������̽�����ᴼ���ʵ����ı�,�߻���������,��Ӧʱ��ͷ�Ӧ�¶ȶ������ʵ�Ӱ�켰�߻������ظ�ʹ����������������Ӧ�������Ϊ:�ᴼĦ����Ϊ2.0,�߻�������Ϊԭ��������1%,��Ӧʱ��Ϊ6.0 h,��Ӧ�¶�80��,�߻���������ʹ��5������»����������½���
Service
�ѱ����Ƽ�������
�����ҵ����
�������ù�����
Email Alert
RSS
�����������
�����
�ؼ����� ��п�Ӷ�����   �߻��ϳ�   ��������     
Abstract�� Three kinds of tungstozincic heteropoly acid complexes with Keggin structure,such as K_8[CdZnW_(11)O_(39)(H_2O)],K_8[NiZnW_(11)O_(39)(H_2O)],K_8[CuZnW_(11)O_(39)(H_2O)],were synthesized.Ethyl acetate was prepared from glacial acetic acid and anhydrous ethanol catalyzed by tungstozincic heteropoly acid complexes.The effects of molar ratio of anhydrous ethanol to glacial acetic acid,dosage of catalyst,reaction temperature and reaction time on the esterification ratio and reuse of catalyst were discussed.The results showed the optimal condition is that the Molar ratio of ethanol to acetic acid is 2��1, the dosage of catalyst is 1% of the material gross,reaction time is 6.0 h at 80 ��.Moreover,after continuous use for five times,the activity of the catalyst hardly descend.
Keywords��   
Received 2008-11-15; published 2008-11-15
���ñ���:   
�����;.11-��п�Ӷ����δ߻��ϳ���������[J].  ��ѧ��ҵ�빤��, 2008,25(6): 508-511
SHAN Qiu-jie.Synthesis of Ethyl Acetate by 11-Tungstozincic Heteropoly Acid Catalyst[J].  Chemcial Industry and Engineering, 2008,25(6): 508-511
Copyright 2010 by ��ѧ��ҵ�빤��