不同载体的镍基氧化锌对噻吩的吸附脱除性能

孟璇; SALISSOU ZAKATY M N; 翁惠新; 施力

不同载体的镍基氧化锌对噻吩的吸附脱除性能

华东理工大学石油加工研究所, 上海 200237

详细信息

通讯作者:
施力, E-mail: yyshi@ecust.edu.cn。

中图分类号: TQ519
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出版历程
- 收稿日期: 2011-03-17
- 刊出日期: 2012-03-31

Adsorptive removal of thiophene over nickel-based ZnO with different supports

Petroleum Processing Research Center, East China University of Science and Technology, Shanghai 200237, China

摘要

摘要: 采用混捏法制备了以金属氧化物、黏土及分子筛为载体的三类镍基氧化锌吸附剂,采用FT-IR等分析手段进行表征,探讨了其物化性能的差异,并利用微型固定床反应器考察了上述吸附剂对噻吩的吸附脱除性能。结果表明,不同吸附剂对噻吩的吸附效果不同,黏土载体的吸附剂脱硫性能高于金属氧化物载体的脱硫性能,吸附剂的脱硫活性顺序依次为cay-sorb>diatomite-sorb>Al-sorb>Ti-sorb。利用FT-IR对吸附剂的表面酸性进行了表征。结果表明,吸附剂的脱硫性能与其总L酸量有关,总L酸量高的吸附剂脱硫效果较好。分子筛载体吸附剂的脱硫活性顺序依次为MCM-22-sorb>HY-sorb≥Hβ-sorb>H-mordenite-sorb>HZSM-5-sorb。通过比较分子筛载体的孔道结构表明,分子筛载体孔径大小是影响吸附剂脱硫性能的主要因素。
- 噻吩 /
- 氧化锌 /
- 镍 /
- 黏土 /
- 分子筛 /
- 吸附脱硫
Abstract: The nickel-based ZnO adsorbents were prepared by mix-kneading method using different supports with metal-oxide, clay and zeolite. The physiochemical properties of the catalysts were characterized using FT-IR. Then the chemical adsorption performance of thiophene on the adsorbents was studied in a fixed bed stainless steel tubular micro-reactor. The results show that the desulfurization performance varies for different adsorbents. The desulfurization performance of adsorbents with clay supports is higher than that of metal-oxide supports. The desulfurization performance decreases in order of clay-sorb > diatomite-sorb > Al-sorb > Ti-sorb. The sulfur removal rate increases with the total Lewis acidity of the adsorbent. The desulfurization performance decreases in the order of MCM-22-sorb > HY-sorb ≥ Hβ-sorb > H-mordenite-sorb > HZSM-5-sorb. By comparing the pore structure of zeolite supports, it shows that the effective pore size of zeolite supports is the key factor to influence the desulfurization activity.
- thiophene /
- zinc oxide /
- nickel /
- clay /
- zeolite /
- adsorptive desulfurization

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