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Methods of producing composite zeolite catalysts for heavy reformate conversion into xylenes

A composite zeolite and catalyst technology, applied in the fields of forming a composite zeolite catalyst and for the conversion of heavy reformate

Active Publication Date: 2021-07-30
SAUDI ARABIAN OIL CO +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Regardless, these methods of producing xylenes by simultaneous dealkylation and transalkylation have limited efficiency due to the sequential nature of the conversion reaction process in which the product of the first reaction is used in the second reaction

Method used

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  • Methods of producing composite zeolite catalysts for heavy reformate conversion into xylenes
  • Methods of producing composite zeolite catalysts for heavy reformate conversion into xylenes
  • Methods of producing composite zeolite catalysts for heavy reformate conversion into xylenes

Examples

Experimental program
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Embodiment

[0087] The described embodiments will be further illustrated by the following examples and comparative examples.

[0088] For demonstration purposes, a composite zeolite catalyst is prepared according to one or more embodiments of the present disclosure. A composite zeolite catalyst having different ratios of wire zeolite and ZSM-5 is formed. By using the gel Moorery provided in Table 1 (0.30NA 2 O: 1sio 2 : 0.025Al 2 O 3 : 0.075C 22-6-6 Br 2 : 40h 2 O) and follow the same procedures described in Example 2, composite zeolite catalyst particles were synthesized at a weight ratio of 40% wire zeolite and 60% ZSM-5, and specified as MOR ZSM-5 (Example 2). In order to synthesize the composite zeolite catalyst particles for Example 2, 0.434 g (G) NaAlo will 2 (Al 2 O 3 47wt.%, NA 2 O 34.4 wt.% And h 2 O 18.6 wt.%) Added to 4.474 g of NaOH solution (10 wt.%), It is then added 22.189 g of water. Also, add C 22-6-6 Br 2 (2.173 g, molar weight = 724.48 g / mol) as an organic structural gui...

Embodiment 4

[0134] Example 4 (RE / MOR> ZSM-5), although the activity is lower than commercial ATA-21 (comparative Example 5), but is higher than ATA-21 with higher talt-yl rast rate. This is considered to be because of the preferred results of the desired xylene than the commercial reference. From the perspective of separation and generating undesired by-products, higher selectivity is beneficial. Further, in the xylene sketch, Example 4 pairs the most valuable isomer pair xylene more selective. Therefore, high xylene and the choice of xylene are the benefits provided by the embodiments of the present disclosure.

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Abstract

A method of forming composite zeolite catalyst particles includes combining a silicon source, an aqueous organic structure directing agent having a polyquaternary ammonium compound, water and an aluminum source to form a catalyst gel. The method also includes heating the catalyst gel to form the composite zeolite catalyst particle having an intergrowth region with a mixture of both Mordenite crystals and ZSM-5 crystals. An associated method of making xylene includes feeding heavy reformate to a reactor, the reactor containing the composite zeolite catalyst particles, and producing xylene by simultaneously performing dealkylation and transalkylation of the heavy reformate in the reactor, where each composite zeolite catalyst particle is able to catalyze both the dealkylation and transalkylation reactions.

Description

[0001] Cross-reference [0002] The present application claims priority to European Application No. 18382172.7, filed on March 14, 2018, which will be incorporated herein by reference. Technical field [0003] The embodiments of the present specification are generally related to catalysts, and in particular to forming a composite zeolite catalyst and a method for transforming of heavy reforming products. Background technique [0004] Heavy reformate (HR) (mainly included C 9+ The aromatic hydrocarbon is a fraction after extracting more valuable BTEX (benzene, toluene, ethylbenzene, xylene) fraction from catalyzed reforming product or pyrolysis gasoline. Traditionally, the fraction is directly added to the gasoline cell. However, due to the limitation of benzene content in gasoline due to environmental regulations, it is important to find alternatives to other valuable products. An option is to convert heavy aromatic hydrocarbons in heavy refore products to xylene. The demand for x...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/18B01J29/22B01J29/24B01J29/26B01J29/40B01J29/44B01J29/46B01J29/48B01J29/80B01J35/00C01B39/02C07C6/12C07C15/08
CPCC07C4/18C07C6/126C07C2529/18C07C2529/22C07C2529/24C07C2529/26C07C2529/40C07C2529/44C07C2529/46C07C2529/48C07C2529/80C01B39/023B01J29/18B01J29/22B01J29/24B01J29/26B01J29/40B01J29/44B01J29/46B01J29/48B01J29/80Y02P20/52B01J35/30C07C15/06C07C15/08B01J37/0201B01J37/04B01J37/08C01B39/04C01B39/26C01B39/265C01B39/38C01B39/40C07C6/12B01J2029/062B01J2229/62C01P2002/01C01P2002/72C01P2002/82
Inventor 雷德·哈桑·阿布达伍德阿维利诺·科玛·卡诺M·特蕾莎·玻缇拉·奥维杰罗文森特·J·玛格丽特·班纳文M·特蕾莎·纳瓦罗·维拉尔巴M·克里斯蒂娜·马丁内斯·桑切斯伊布拉欣·M·阿尔扎哈拉尼
Owner SAUDI ARABIAN OIL CO