介孔Al2O3、SiO2负载MoO3-Fe2O3催化甘油脱水还原制丙烯醇.pdf

石油化
PETROCHEMICAL TECHNOLOGY
2017年第46卷第7期
D?l:10.3969/jSsm.1000-8144.2017.07.003
介孔A2O3、SiO2负载MoO-Fe2O3催化
甘油脱水还原制丙烯醇
兰海,2,肖照2,袁善良2,张彪,蒋毅
(1.中国科学院成都有机化学研究所,四川成都610041;2.中国科学院大学,北京10009
[摘要]分别以商品A1O3和自制Si02为载体,通过浸法制备了负載型 Mofeo/Al4O2和 MOFEO / Sio2催化剂,利用XRD
BET,XPS,NH1-mPD等手段表征了催化剂的组成、结构和表面酸性,并考察了催化剂刚甘油多相催化转化制丙烯醇的催化
性能。实验结果表明,高比表面积Al2O3和SiO2的表面均形成了高分散态MoO2和Fe2O3,呈弱酸性。具们发达、規整介孔
结构的SiO2更能促进Mo-FeO3之间的相互作用,提高性化剂表面的活性中心数。以 MOFEO/Al10っ为催化剂、甘油转化率
为83.2%,丙烯醇选择性和收率分别为10.1%和8.4%,且催化剂易积碳而失活;而以 Mofea/Sic2为催化剂,村油转化率达
9%.1%,两烯醇收率和选择性分別提高到211%和22.7%,并展现出较高的稳定性和再生性。
关键词]Fe-Mo氧化物催化剂;介孔SiO2;甘油;丙烯醇
文章编号]1000-8144(2017)07-0850-07
[中图分类号」TQ32.4
[文献标志码]A
Mesoporous AL, 0, and Sio supported Mo0a -Fe2 0a catalysts for glycero
conversion into allyl alcohol
Lan He
Shanliang.2, Zhang Biao, Jiang Yi
1. Chengdu Institute of Organic Chemistry, Chinese Academy of Scienee, Chengdu Sichuan 610041, China
2. University of Chinese Academy of Science, Beiiing 100049, China
I Abstract The Mofeo /A1 O, and MOFEO /Sio were prepared by wet impregnation methods
using commercial Al, O, and prepared Sio2 as supports. The supported catalysts were characterized
by XRD, BET, XPS and NH -TPD, and investigated by gas glycerol catalytic conversion into
allyl alcohol. The results show that the Moo, and Fe2o species exist on Al2o; and Si02 in amorphous
state, which shows weak acid property. The developed mesoporous Sio2 with high specific surface
area and supported Mo-fe oxides is exposing more surface reactive sites with interaction between
Moo, and Fe, O. The glycerol catalytic conversion over Mofeo /A12 O; was 83.2 with the ally
alcohol yield and selectivity of 8.4% and 10.1%, respectively, but decrease badly because of coke
produced. However, for the Mofeo $i02, the catalytic conversion of gas glycerol reached 97.1%
with the yield and selectivity of allyl alcohol improved to 21. 1% and 22.7%, respectively, showing
better stability and reproduction ability than the Mofeo A1203
Keywords I Fe-mo oxide catalysts; mesoporous Sio2 glycerol; allyl alcohol
近年来,生物柴油工业化生产导致甘油产量均有广泛应用的各种高附加值化学品。由于丙烯醇
严重过剩,引领了甘油高值化研究的热潮,如甘油是化学反应中重要的中间体,如合成1,4丁二醇
选择性氧化、氢解2、酯化3、脱水和重整S
烯丙基缩水村油醚、缩水甘油、丙烯胺和烯丙醇聚
等研究,将甘油转化为在燃料、化T、建筑等领域
氧乙烯等,应用非常广泛?。因而,甘油多相催化
收稿日期]2016-12-23;[修改稿日期]2017-04-09。
作者简介]兰海(1988-),男,重庆市人,博士,电话13258292176,电邮IH6023887401260m。联系人:将毅,电话028-852975
电邮jiang@CIOC.ao.cno
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