Effect of steam de-alumination on the interactions of propene with H-ZSM-5 zeolites

Hawkins Alexander P.; Zachariou Andrea; Parker Stewart F.; Collier Paul; Barrow Nathan; Silverwood Ian P.; Howe Russell F.; Lennon David

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Effect of steam de-alumination on the interactions of propene with H-ZSM-5 zeolites

机译：蒸汽除去对丙烯与H-ZSM-5沸石相互作用的影响

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Steam de-alumination is used to prepare a H-ZSM-5 material representative of industrial acid zeolite catalysts. Characterisation shows extensive loss of zeolite acidity but minimal loss of framework crystallinity in the treated material. The material's interaction with propene is probed by means of inelastic and quasielastic neutron scattering, providing information on the reactivity and mobility of the propene respectively. These results are compared to those previously obtained for propene in the untreated zeolite. The steaming treatment resulted in decreased reactivity of the zeolite toward olefin oligomerization, higher temperatures for reaction initiation, and increased mobility of the propene in the zeolite at all temperatures. Analysis of the motions of the propene revealed by QENS shows the mobility to be comparable to those previously reported for propane in similar materials but occurring at slower velocities due to the greater rigidity and polarisation of the propene molecule.

机译：蒸汽除铝用于制备代表工业酸沸石催化剂的H-ZSM-5材料。表征显示了经处理材料中的沸石酸度的广泛损失，但是处理过的材料中的骨架结晶损失最小。通过非弹性和准中子散射探测材料与丙烯的相互作用，分别提供有关丙烯的反应性和迁移率的信息。将这些结果与先前在未处理的沸石中获得的那些结果进行比较。蒸汽处理导致沸石对烯烃寡聚化的反应性降低，反应起始的较高温度，并在所有温度下沸石中丙烯的迁移率增加。 QENS揭示的丙烯的运动的分析表明，迁移率与先前报道的类似材料中丙烷的迁移率相当，但由于丙烯分子的刚性和极化的较高速度而发生较慢的速度。

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《RSC Advances》 |2020年第39期|共12页
作者
Hawkins Alexander P.; Zachariou Andrea; Parker Stewart F.; Collier Paul; Barrow Nathan; Silverwood Ian P.; Howe Russell F.; Lennon David;
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Univ Glasgow Sch Chem Joseph Black Bldg Glasgow G12 8QQ Lanark Scotland;

Univ Glasgow Sch Chem Joseph Black Bldg Glasgow G12 8QQ Lanark Scotland;

Univ Glasgow Sch Chem Joseph Black Bldg Glasgow G12 8QQ Lanark Scotland;

Johnson Matthey Technol Ctr Reading RG4 9NH Berks England;

Johnson Matthey Technol Ctr Reading RG4 9NH Berks England;

STFC Rutherford Appleton Lab ISIS Neutron &

Muon Source Chilton OX11 0QX Oxon England;

Univ Aberdeen Dept Chem Aberdeen AB24 3UE Scotland;

Univ Glasgow Sch Chem Joseph Black Bldg Glasgow G12 8QQ Lanark Scotland;

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正文语种 eng
中图分类化学;
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1. Effect of steam de-alumination on the interactions of propene with H-ZSM-5 zeolites [J] . Hawkins Alexander P., Zachariou Andrea, Parker Stewart F., RSC Advances . 2020,第39期

机译：蒸汽除去对丙烯与H-ZSM-5沸石相互作用的影响
2. Comparison of steaming stability of Cu-ZSM-5 with those of Ag-ZSM-5, P/H-ZSM-5, and H-ZSM-5 zeolites as naphtha cracking catalysts to produce light olefin at high temperatures [J] . Kubo Kohei, Iida Hajime, Namba Seitaro, Applied Catalysis, A. General: An International Journal Devoted to Catalytic Science and Its Applications . 2015,第Null期

机译：Cu-ZSM-5与Ag-ZSM-5，P / H-ZSM-5和H-ZSM-5沸石作为石脑油裂化催化剂在高温下生产轻质烯烃的蒸汽稳定性的比较
3. Proton proximity - New key parameter controlling adsorption, desorption and activity in propene oligomerization over H-ZSM-5 zeolites [J] . Bernauer M., Tabor E., Pashkova V., Journal of Catalysis . 2016,第Null期

机译：质子接近性-控制H-ZSM-5沸石在丙烯低聚过程中吸附，解吸和活性的新关键参数
4. A QUANTUM CHEMICAL STUDY OF THE INTERACTION OF CARBONYLS WITH H-ZSM-5 ZEOLITE [C] . Boekfa, B., Sirijareansre, International Zeolite Conference pt.B; 20040425-30; Cape Town(ZA) . 2004

机译：卡宾与H-ZSM-5分子筛相互作用的量子化学研究
5. An FTIR study of the conversion of methanol to higher hydrocarbons over fluorided zeolite H-ZSM-5 [D] . Villeneuve, Eric 1988

机译：FTIR研究氟化沸石H-ZSM-5上甲醇向高级烃的转化
6. Methanol loading dependent methoxylation in zeolite H-ZSM-5 [O] . Santhosh K. Matam, Stefan A. F. Nastase, Andrew J. Logsdail, 2020

机译：甲醇加载沸石H-ZSM-5中依赖性甲氧基化
7. Quantitative 3D Fluorescence Imaging of Single Catalytic Turnovers Reveals Spatiotemporal Gradients in Reactivity of Zeolite H-ZSM-5 Crystals upon Steaming [O] . Ristanovic Zoran, Hofmann Jan P, De Cremer Gert, 2015

机译：单一催化周转的定量3D荧光成像显示了H-ZSM-5分子筛在蒸煮后的反应性时空梯度

Effect of steam de-alumination on the interactions of propene with H-ZSM-5 zeolites

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