Effect of characteristics of TiO2 carrier on performance of dibenzothiophene hydrodesulfurization

doi:10.3969/j.issn.0438-1157.2013.07.021

CIESC Journal ›› 2013, Vol. 64 ›› Issue (7): 2462-2467.DOI: 10.3969/j.issn.0438-1157.2013.07.021

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Effect of characteristics of TiO₂ carrier on performance of dibenzothiophene hydrodesulfurization

WANG Huaiyuan^1,2, ZHU Youzhuang¹, ZHAO Jingyan¹, CHENG Xiaoshuang¹, ZHANG Zhihua²

1. School of Chemistry & Chemical Engineering, Northeast Petroleum University, Daqing 163318, Heilongjiang, China;
2. Daqing Chemical Industry Research Center, PetroChina, Daqing 163318, Heilongjiang, China

Received:2012-11-29 Revised:2013-04-19 Online:2013-07-05 Published:2013-07-05
Supported by:
supported by the National Natural Science Foundation of China (50903010,51175066),the Provincial Doctor Foundation (bh2010431)and the Development Projects of PetroChina Company Limited(201012xx).

TiO₂载体特性对二苯并噻吩加氢脱硫性能的影响

汪怀远^1,2, 朱友庄¹, 赵景岩¹, 程小双¹, 张志华²

1. 东北石油大学化学化工学院, 黑龙江大庆 163318;
2. 大庆化工研究中心, 黑龙江大庆 163318

通讯作者: 汪怀远(1977- ),男,博士,教授
作者简介:汪怀远(1977- ),男,博士,教授。
基金资助:
国家自然科学基金项目(50903010,51175066);黑龙江省博后基金项目(bh2010431);中国石油天然气有限公司石油化工研究院开发项目(201012xx)。

Abstract

Abstract: An attempt using self-regulating mesoporous titanium dioxide whisker as catalyst carrier of hydrogen desulfurization,was carried out to prepare MoO₃-NiO/TiO₂ catalyst by single-step incipient wetness impregnation.X-ray,N₂ absorption/desorption,SEM,Raman diffraction were adopted to characterize the carrier and catalyst.The effect of mesoporous TiO₂ whisker as catalyst carrier on the performance of dibenzothiophene (DBT)hydrogen desulfurization (HDS)was evaluated.The results showed that the mesoporous TiO₂ whisker had highly active anatase,whisker morphology and larger specific surface area as well as special pore structure.DBT conversion over mesoporous TiO₂ whisker could approach 100% under moderate conditions of reaction temperature 280℃,hydrogen partial pressure 2.0 MPa,hydrogen/oil volume ratio 400 and LHSV 4 h^-1.Under the condition of similar specific surface area,the sequence of the desulfurization effect of the tested catalysts was anatase> mixed crystals of TiO₂ >rutile.As anatase carriers are concerned,the desulfurization effect increased with the increase of the specific surface area of TiO₂ carrier.

Key words: mesoporous titania whisker, titania carrier, hydrodesulfurization, dibenzothiophene

摘要： 以自制的大比表面介孔二氧化钛晶须作为加氢脱硫催化剂的载体,采用一步浸渍法制备了MoO₃-NiO/TiO₂催化剂,并用 X 射线衍射、N₂ 吸附-脱附、SEM、拉曼衍射等技术对载体和催化剂进行了表征,考察了TiO₂晶须材料作为二苯并噻吩(DBT)上加氢脱硫(HDS)催化剂载体的性能及优越性,并详细考察了不同TiO₂载体的晶型与比表面积对催化剂加氢脱硫反应活性的影响。结果表明,TiO₂介孔晶须具有较为活泼的锐钛矿相和晶须形貌,同时提供了大的比表面积和特殊的孔道结构,在温度280℃、氢分压2.0 MPa、氢/油体积比400、体积空速4 h^-1的温和条件下,DBT转化率即可接近100%。比表面积相近时,催化剂的脱硫效果依次为锐钛矿相>混晶>金红石相;同为锐钛矿相TiO₂载体,催化剂的脱硫效果随着比表面的增大而增加。

关键词: 介孔二氧化钛晶须, TiO₂载体, 加氢脱硫, 二苯并噻吩

CLC Number:

O643.3

WANG Huaiyuan, ZHU Youzhuang, ZHAO Jingyan, CHENG Xiaoshuang, ZHANG Zhihua. Effect of characteristics of TiO₂ carrier on performance of dibenzothiophene hydrodesulfurization[J]. CIESC Journal, 2013, 64(7): 2462-2467.

汪怀远, 朱友庄, 赵景岩, 程小双, 张志华. TiO₂载体特性对二苯并噻吩加氢脱硫性能的影响[J]. 化工学报, 2013, 64(7): 2462-2467.

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Effect of characteristics of TiO₂ carrier on performance of dibenzothiophene hydrodesulfurization

TiO₂载体特性对二苯并噻吩加氢脱硫性能的影响

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