介孔化活性白土的合成及其催化氧化丙硫醇的研究

石油炼制与化工 ›› 2020, Vol. 51 ›› Issue (4): 18-23.

介孔化活性白土的合成及其催化氧化丙硫醇的研究

金林鹏^1,2,施力^1,2,孟璇^1,2,刘乃旺^1,2,王昕^1,2

1. 华东理工大学石油加工研究所
2. 绿色能源化工国际联合研究中心

收稿日期:2019-10-25 修回日期:2019-12-23 出版日期:2020-04-12 发布日期:2020-04-28
通讯作者: 孟璇 E-mail:mengxuan@ecust.edu.cn
基金资助:
国家自然科学基金

STUDY ON SYNTHESIS OF MESOPOROUS ACTIVATED CLAY AND ITS CATALYTIC PERFORMANCE FOR 1-PROPANETHIOL OXIDAION

Received:2019-10-25 Revised:2019-12-23 Online:2020-04-12 Published:2020-04-28
Contact: Xuan MENG E-mail:mengxuan@ecust.edu.cn
Supported by:

摘要/Abstract

摘要： 以团聚块状活性白土为母体，在碱性条件下将其分散剥离，并通过十六烷基三甲基溴化铵（CTAB）的导向作用，向白土层间引入近程有序介孔SiO2，成功合成了片状介孔化活性白土。采用等体积浸渍法对活性白土和介孔化活性白土进行铜离子（Cu2+）改性。静态试验结果表明，铜负载量(w)为25 %、活化温度为150 ℃时，所制得的介孔化活性白土催化作用下模拟原料中丙硫醇的转化率接近100 %。动态试验结果表明，介孔化活性白土具有更高的Cu2+承载能力，并且在相同的Cu2+负载量下，表现出比活性白土更为优异的丙硫醇催化氧化性能。研究丙硫醇催化氧化机理后发现，过量丙硫醇在Cu2+的催化作用下，形成了二丙基二硫醚。

关键词: 活性白土, 介孔, 催化氧化, 丙硫醇

Abstract: In this paper, agglomerated bulk activated clay was used as precursor, which was stripped and dispersed under basic conditions, and then the short-range ordered mesoporous SiO2 was introduced into the activated clay interlayers by the guiding of cetyltrimethylammonium bromide (CTAB) to obtain the flake mesoporous activated clay. The as synthesized mesoporous activated clay and the reference activated clay were subjected to copper ion (Cu2+) modification by equal volume impregnation method. The static catalytic oxidation experiment with 1-propanethiol hexane solution showed that the conversion of 1-propanethiol on Cu2+modified clay was close to 100% when the copper loading was 25% (w) and the activation temperature was 150 °C. Dynamic catalytic oxidation experiment showed that the mesoporous activated clay had higher Cu2+ loading capacity and exhibited better catalytic oxidation performance for thiol under the same Cu2+ loading. In addition, the study on catalytic oxidation mechanism of 1-propanethiol found that the excessive 1-propanethiol was catalyzed by Cu2+ to form dipropyl disulfide.

Key words: activated clay, mesoporous, catalytic oxidation, 1-propanethiol

中图分类号:

金林鹏施力孟璇刘乃旺王昕. 介孔化活性白土的合成及其催化氧化丙硫醇的研究[J]. 石油炼制与化工, 2020, 51(4): 18-23.

参考文献

[1]REDDY K K, SUBRAMANIAN R, KAWAKATSU T, et al.Decolorization of vegetable oils by membrane processing[J].European Food Research and Technology, 2001, 213(3):212-218
[2]SABAH E.Decolorization of vegetable oils: chlorophyll-a adsorption by acid-activated sepiolite[J].Journal of Colloid and Interface Science, 2007, 310(1):1-7
[3]CHRISTIDIS G E, KOSIARI S.Decolorization of vegetable oils: a study of the mechanism of adsorption of β-carotene by an acid-activated bentonite from Cyprus[J].Clays and Clay Minerals, 2003, 51(3):327-333
[4]卢杨, 徐爱军.活性白土对食用油脂的脱色研究[J].粮油加工, 2010, 9(1):13-16
[5]韩雪松.我国活性白土的生产状况[J].上海化工, 2010, 35(6):31-33
[6]宋晓岚, 曲鹏, 王海波.介孔材料的制备、表征、组装及其应用[J].材料导报, 2004, 18(10):28-30
[7]雷晓菊, 王君, 郝红, et al.介孔材料的制备及应用研究[J].硅酸盐通报, 2014, 33(10):2534-2540
[8]徐德兰, 武翠翠, 宋宏斌, et al.介孔材料孔径调节的最新研究进展[J].化工新型材料, 2012, 40(8):138-140
[9]LUAN J-N, LI G-L, SHI L.Study of Modified Clay and Its Industrial Testing in Aromatic Refining[J].Industrial & Engineering Chemistry Research, 2011, 50(12):7150-7154
[10]YANG P P, QUAN Z W, HOU Z Y, et al.A magnetic,luminescent and mesoporous core-shell structured composite material as drug carrier[J].Biomaterials, 2009, 30(27):4786-4795
[11]GAI S, YANG P, LI C, et al.Synthesis of Magnetic,Up-Conversion Luminescent,and Mesoporous Core-Shell-Structured Nanocomposites as Drug Carriers[J].Advanced Functional Materials, 2010, 20(7):1166-1172
[12]薛卫红.介孔型柱撑蒙脱石的制备与表征 [D]; 中国科学院研究生院（广州地球化学研究所）, 2007.
[13]KAWI S, YAO Y Z.Silica bonded K10 montmorillonite (SBM):a high surface area catalytic clay material[J].Microporous and Mesoporous Materials, 1999, 28(1):25-34
[14]蒋引珊, 刘见芬, 王安平.蒙脱石原位合成有序介孔材料[J].高等学校化学学报, 2003, 24(11):1956-1958
[15]WENG C-H, TSAI C-Z, CHU S-H, et al.Adsorption characteristics of copper(II) onto spent activated clay[J].Separation and Purification Technology, 2007, 54(2):187-197
[16]仪得志.吸附法脱除油品中有机硫的研究 [D]; 华东理工大学, 2014.