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Preparation of metal-in-hollow-zeolite-based catalyst for selective benzene alkylation

A zeolite catalyst, catalyst technology, applied in the direction of catalyst activation/preparation, carbon compound catalyst, physical/chemical process catalyst, etc.

Inactive Publication Date: 2019-12-27
SABIC GLOBAL TECH BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In another example, Corma et al. (Journal of Catalysis, 2002, 207:46-56) describe the alkylation of benzene with ethanol in the presence of ITQ-7 zeolite and beta zeolite; however, in addition to xylene and This reaction leads to the formation of polyalkylated aromatic compounds, in addition to other unwanted products

Method used

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  • Preparation of metal-in-hollow-zeolite-based catalyst for selective benzene alkylation
  • Preparation of metal-in-hollow-zeolite-based catalyst for selective benzene alkylation
  • Preparation of metal-in-hollow-zeolite-based catalyst for selective benzene alkylation

Examples

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Embodiment 1

[0050] (Synthesis of hollow Fe-silicalite-1 based catalyst)

[0051] The synthesis of hollow Fe-silicalite-1 based catalysts is described. Characterization of the material clearly shows that iron particles are detectable within the hollow particles. No iron oxide particles were detected outside the cavity. Improvements in catalyst synthesis include metal particle size and metal dispersion. The catalyst can have high selectivity for the synthesis of ethylbenzene or cumene.

[0052] A. Program

[0053] As an example, the scheme of hollow zeolite catalysts with Fe oxides is described. The zeolite was treated with the corresponding template tetrapropylammonium hydroxide (TPA(OH), SigmaMillipore) in hydroxide form to obtain the MFI zeolite structure. The mixture was transferred to a Teflon-lined autoclave and heated at 180 °C for 72 hours. The material was then recovered by centrifugation (15 min at 10000 rpm) and washed several times with water to remove excess template. Af...

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Abstract

The invention is directed to hollow zeolite encapsulated metal particle catalysts where the metal particle is contained in the hollow of the zeolite, their preparation method by depositing metal particle precursors and subsequent removal of said metal particle precursors from the surface of the hollow zeolite while retaining those in the cavity of the hollow zeolite, and the catalysts' use in selective benzene alkylation.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of priority to U.S. Provisional Patent Application No. 62 / 507919, filed May 18, 2017, the entire contents of which are incorporated herein by reference. Background technique [0003] Given the current environmental challenges, there is an urgent need to develop a more sustainable chemical industry through more efficient chemical transformations and processes. Improvements in these chemical transformations and processes may include (i) increased reaction yields and / or selectivities, (ii) reduced operating costs, and (iii) use of more suitable reactants and catalysts. One way to address the inefficiencies and costs of current processes is to develop new highly selective and cost-effective catalysts, as well as more efficient and cost-effective catalyst preparation methods. [0004] Zeolites are a class of crystalline materials that can be used in the design and development of new catal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/40B01J29/44B01J29/46B01J29/48B01J29/08B01J29/12B01J29/14B01J29/16B01J29/70B01J29/74B01J29/76B01J29/78B01J35/00B01J37/06B01J37/02C07C2/70C01B39/02C01B39/04C01B39/36B01J35/02
CPCB01J37/06B01J29/08B01J29/085B01J29/12B01J29/14B01J29/16B01J29/40B01J29/405B01J29/44B01J29/46B01J29/48B01J29/7007B01J29/7038B01J29/7057B01J29/7088B01J29/7415B01J29/7476B01J29/7615B01J29/7676B01J29/7815B01J29/7876B01J37/0203C07C2/70B01J2229/20Y02P20/52B01J35/398B01J35/393B01J35/19B01J35/30B01J35/23B01J35/50B01J35/40C07C15/073C07C15/085B01J29/0356B01J37/0201B01J37/0236B01J37/088C07C2521/04C07C2521/08B01J35/51
Inventor 乌戈·拉翁阿卜杜勒拉赫曼·M·阿尔哈兹米阿卜杜拉·阿尔特霍贝蒂奥马尔·A·阿比德哈利德·巴希利
Owner SABIC GLOBAL TECH BV
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