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Catalyst material and preparation method thereof

A catalyst and binder technology, applied in the field of catalyst materials and their preparation, can solve the problems of low aromatic hydrocarbon conversion reaction activity and the like

Active Publication Date: 2012-05-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] One of the technical problems to be solved by the present invention is the problem of low activity of catalysts in the previous literature on the conversion of aromatics, and a new catalyst material is provided, which has the advantage of high activity when used in the conversion of aromatics

Method used

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  • Catalyst material and preparation method thereof
  • Catalyst material and preparation method thereof
  • Catalyst material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] 5 grams of PDDA (20%wt) was dissolved in 495 milliliters of deionized water and stirred evenly, 320 grams of ZSM-5 former powder was added in this surface modifier solution, the temperature was raised to 30°C under stirring and kept for 3 hours, filtered and After drying in the air atmosphere at 100°C, add it to the zeolite beta nanocrystal suspension for pre-adhesion for 120 minutes, filter and dry in the air atmosphere at 100°C to obtain the treated ZSM-5 powder. Zeolite beta can be obtained after 40 grams of tetraethyl orthosilicate, 8 grams of sodium aluminate, 18 grams of sodium chloride, 6 milliliters of sulfuric acid, 20 milliliters of tetraethylammonium hydroxide, 10 milliliters of ammonia and 400 milliliters of water are evenly gelled. Molecular sieve synthesis system. Add 320 grams of treated ZSM-5 powder into the gelling solution and stir for 2 hours. The mixed system was transferred into a polytetrafluoroethylene-lined stainless steel crystallization kettle...

Embodiment 2～7

[0055] Examples 2-7 are based on the synthesis ratio and synthesis conditions in Table 1, and are synthesized according to the similar method and steps of Embodiment 1 to obtain core-shell molecular sieves CS2-7, see Table 1 for details.

[0056] Table 1 Preparation conditions of core-shell molecular sieves

[0057]

Embodiment 8～19

[0059] In Examples 8-19, hydrogen-type core-shell molecular sieve catalysts HCS-Cat8-13 and modified core-shell molecular sieve catalysts MCS-Cat8-19 were prepared according to a method similar to Example 1. The specific preparation conditions are shown in Table 2 and Table 3.

[0060] Table 2 Preparation conditions of hydrogen-type core-shell molecular sieve catalysts

[0061] Example number

[0062]

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Abstract

The invention relates to a catalyst material and a preparation method thereof, mainly aiming at solving the problem of low reaction activity of the aromatics transformation of catalyst materials in previous documents. The invention better solves the problem by adopting the technical scheme of a novel catalyst material, i.e. the catalyst material of beta zeolite crystalline grains, and the preparation method thereof, wherein the novel catalyst material comprises the following components in parts by weight: (a) 5-95 parts of core-shell type molecular sieve materials and (b) 95-5 parts of binders, wherein a core-shell type molecular sieve has a nuclear phase of ZSM-5, and a shell layer has the cover degree of 50-100 percent. The catalyst material can be used for the industrial production of the aromatics transformation.

Description

technical field [0001] The invention relates to a catalyst material and a preparation method thereof. Background technique [0002] Zeolite molecular sieves contain regular nanopores and adjustable acidity. Since the 1960s, they have been widely used in petroleum refining and chemical fields, such as catalytic cracking, catalytic reforming, transalkylation, isomerization and alkylation Catalyzed reaction process. [0003] The acid strength and acid distribution of ZSM-5 can be adjusted in a wide range. Its crystal size can also be adjusted in a large range, and its structure can be greatly modified. Therefore, ZSM-5 is a molecular sieve material widely used in research. The size of the 10-membered ring straight channel in ZSM-5 molecular sieve is 0.51×0.55nm, and the size of the zigzag channel is 0.54×0.56nm. It is often used in intracrystalline shape-selective catalytic reactions and cracking reactions of small molecules such as gasoline fractions. The size of aromatic m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/80B01J29/40B01J29/70B01J29/44B01J29/48B01J29/74B01J29/78B01J21/10B01J37/02B01J37/08C07C4/18
Inventor 孔德金邹薇祁晓岚周亚新
Owner CHINA PETROLEUM & CHEM CORP