糠醛气相法催化氧化制顺丁烯二酸酐.pdf

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化工进展
2009年第28卷第6期
CHIEMICAL INDUSTRY AND ENGINEERING PROGRESS
1019
研究开发
糠醛气相法催化氧化制顺丁烯二酸酐
王少莽,冷一欣,林富荣,黄春香,伊春
(江苏工业学院化学化工学院,江苏常州213164
摘要:利用没渍法制备负载型V2 OS-MOO-P2O3-Al2O3催化剂。采用ICP、N2吸附-脱附等温线及XRD表征催
化剂的物化性质、结构特征,通过TPR考察催化剂晶格氧的供氧能力。在固定床连续微反应装置上,以来源于可
再生生物资源的糠醛为原籵,进行催化剂的性能评价。实验结果表明:当催化剂中MoO3和V2O质量比为0.4
反应混合气体(槺醛体积分数2%的空气混合气体)空速为3000h1、反应温度为305℃的工艺条件下,测得糠醛
转化率为82%,顺酐的收率为50%,说明适当地引入MoO3能够调节催化削活性中心与载体间的强相互作用,达
到促进催化剂晶格氧快速交换的目的,从而进一步提高催化剂的活性和选择性。
关键词:糠醛;氧化物催化剂;程序升温还原;顺酐
中图分类号:TQ032.41文献标识码:A文章编号:1000-6613(2009)06-1019-05
Catalytic oxidation of furfural in vapor-gas phase for producing maleic
anhydride
WANG Shaomang, LENG Yixin, LN Furong, HUANG Chunxiang, YI Chun
Jiangsu Polytechnic University, Faculty of Chemistry and Chemical Engineering, Changzhou 213164, Jiangsu, China)
Abstract: V20-MO03-P20/Y-A1203 loaded catalysts were prepared by impregnation for the oxidation
of furfural to maleic anhydride, The physicochemical properties and textural character of the catalysts
were studied by using CP, N2 adsorption and XRD. The crystal lattice oxygen in the catalysts was
investigated through a method of temperature-programmed reduction(TPR). The catalytic behavior of
the catalysts for the oxidation of furfural was evaluated in a continuous fixed bed reactor, in which a
reacting gas stream of 2% furfural in air was passed through the catalyst at 305 C with 3000 h of gas
velocity. When the quality ratio of Moo /V Os was. 4, the conversion of furfural was 82% and the
yield of maleic anhydride reached to 50%, indicating that the introduction of Moo could adjust the
interaction between the supporter and the active center. Hence, the rapid exchange of crystal lattice
oxygen in the catalysts could be accelerated, and the activity and selectivity of catalysts were
remarkably improved
Key words; furfural; oxidate catalyst; temperature-programmed reduction; maleic anhydride
作为基本有机合成原料之一的顺丁烯二酸酐不可再生资源,如石油、煤炭、天然气等,尤其对
(简称顺阡),是继醋酐、苯酐之后的第三大酸。于石油资源来说,由于储量有限,使市场供需失衡,
目前,生产顺酐的工业化方法主要有苯氧化法和正石油价格的一度飞涨导致顺酐的生产成本大幅上
丁烷选择性氧化法。苯法生产顺酐的选择性和反应
速率较高,但对环境污染却比较严重;正丁烷法对收稿目期:2008-10-15:修改稿日期:200-11-10
环境危害较小,但选择性下降,且对工艺设备的要
第一作者简介:王少莽(1980-),男,硕士研究生,主要从事佳化
剂及化学品合成的研究。联系人:冷一欣,教授,主要从事绿色化学
求较高;与此同时,上述两种原料绝大部分来自于品合成及催化剂研究。电话0519-86356