Y-β复合分子筛的合成、表征和氧化羰基催化性能

摘要采用预置晶种法制备了Y-β复合分子筛，并对其结构进行表征。红外、SEM、BET和XRD等表征说明其具有Y、β两种分子筛的结构特征，而并非Y、β分子筛的机械混合。对合成工艺条件进行考察发现，晶化时间、n(硅)/n(铝)和碱度影响着复合分子筛中Y、β两种分子筛的比例。考察了催化剂在乙醇氧化羰基合成碳酸二乙酯反应中的活性，结果表明，Y-β复合分子筛结合了Y、β分子筛的优点，晶化时间为180 h、n(硅)/n(铝)为36、碱度为1.8的复合分子筛催化剂转化率为1.3%，选择性为46.9%。

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	王增竹
	黄守莹
	王胜平
	马新宾

关键词： Y-β复合分子筛合成氧化羰基碳酸二乙酯

Abstract： Y-β composite zeolite was synthetized using preset crystal seeds method and characterized by FT-IR, SEM, BET and XRD. The characterization results indicated the Y-β composite zeolite had the structural feature of both Y and β zeolite instead of a mixture of them. The preparation conditions were investigated and it was found that crystallization time, SiO_2/Al₂O₃ratio and alkalinity could affect the ratio of Y and β in composite zeolite. In addition, the activity of the catalyst in oxidative carbonylation was investigated. The results revealed that Y-β composite zeolite prepared at crystallization time of 180 h, SiO₂/Al₂O₃ ratio of 36, alkalinity of 1.8 showed relatively higher conversion of 1.3% and selectivity of 46.9%, in combination with the advantages of zeolite Y and β.

Keywords： Y-&beta composite zeolite synthesis oxidative carbonylation diethyl carbonate

Received 2012-04-27;

Fund:

国家自然科学基金（20876112，20936003）；高等学校博士学科点专项科研基金（20090032110021）；高等学校学科创新引智计划（B06006）。

Corresponding Authors: 王胜平，电话：(022)87401818， E-mail：spwang@tju.edu.cn Email: spwang@tju.edu.

About author: 王增竹（1987-），男，山东日照人，硕士研究生，研究方向为有机碳酸酯的合成。

引用本文:

王增竹, 黄守莹, 王胜平, 马新宾.Y-β复合分子筛的合成、表征和氧化羰基催化性能[J]. 化学工业与工程, 2012,29(6): 1-6

WANG Zeng-Zhu, HUANG Shou-Ying, WANG Sheng-Ping, MA Xin-Bin.Synthesis, Characterization and Catalytic Property in Oxidative  Carbonylation of Y-β Composite Zeolite[J]. Chemcial Industry and Engineering, 2012,29(6): 1-6