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Modified mordenite, preparation method and application thereof

A mordenite and modification technology, applied in the field of preparing the modified mordenite, can solve the problems of small pores and cages, lack of connectivity, limited reaction and diffusion of macromolecules, etc., and achieve the effects of mild conditions and improved conversion rate

Inactive Publication Date: 2012-07-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The advantage of mordenite is that it has uniform micropores and relatively large internal surface area, variable skeleton structure and controllable chemical composition. The reaction diffusion of some macromolecules is limited, which affects their reactivity, selectivity and stability
A large number of literatures have pointed out that the limitations of molecular sieves on the diffusion of reactants and products will affect their industrial application prospects

Method used

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  • Modified mordenite, preparation method and application thereof
  • Modified mordenite, preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0066] Mix 34.0g of dried H-type mordenite (Zeolyst, USA, CBV 10A, Si / Al ratio=15, referred to as HMOR) with 400.0mL of 2.0mol / L HNO 3 (pH=1) reflux and stir at 100°C for 4 hours, filter with suction, wash with deionized water, filter with suction, dry in an oven at 120°C for 4 hours, and roast at 450°C for 2 hours to obtain 27.0 g of acid-treated Mordenite 1 (abbreviated as HMOR-A-1).

[0067] Stir 12.0g of HMOR-A-1 and 480mL of 0.2mol / L NaOH solution in a water bath at 80°C for 0.5 hours, filter with suction, wash with deionized water, filter with suction, dry at 120°C for 4 hours, and then dry at 450°C Calcined at the bottom for 2 hours to obtain 8.5 g of acid-treated and alkali-treated mordenite 1 (abbreviated as HMOR-A-B-1).

[0068] Mix the above HMOR-A-B-1 with 900mL of 1.0mol / L NH 4 NO 3The solution was stirred at 80°C for 1 hour, filtered with suction, washed with deionized water, filtered with suction, dried at 120°C for 4 hours, and roasted in a muffle furnace at...

Embodiment 2

[0071] With 12.0g dry H type mordenite (same as embodiment 1) and the HNO of 120.0mL 3.0mol / L 3 (pH=1) Stir at 80°C for 3 hours, filter with suction, wash with deionized water, filter with suction, dry in an oven at 100°C for 8 hours, and roast at 400°C for 4 hours to obtain 10.2 g of acid-treated Mordenite 2 (abbreviated as HMOR-A-2).

[0072] Stir the above HMOR-A-2 and 150mL 0.4mol / L NaOH solution in a water bath at 90°C for 1 hour, filter with suction, wash with deionized water, filter with suction, dry at 100°C for 8 hours, and then dry at 400°C Calcined for 4 hours, 6.9 g of acid-treated and alkali-treated mordenite 2 (abbreviated as HMOR-A-B-2) were obtained.

[0073] Mix the above HMOR-A-B-2 with 300mL of 1.0mol / L NH 4 NO 3 The solution was stirred at 80°C for 1 hour, filtered with suction, washed with deionized water, filtered with suction, dried at 100°C for 8 hours, and roasted in a muffle furnace at 400°C for 4 hours to obtain 6.5 g of acid-treated and alkali-tr...

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Abstract

The invention relates to modified mordenite which has a mesopore increment of 0.170-0.200cm<3>g<-1> relative to the unmodified mordenite. The invention also relates to a preparation method of the modified mordenite, which comprises the steps of: a, treating mordenite with an acid solution; b, treating the mordenite subjected to acid treatment by using an alkaline solution; c, carrying out hydrogen ion exchange on the mordenite subjected to alkaline treatment; and d, carrying out steam treatment on the mordenite obtained in the step c. The invention further relates to a method for enabling benzene and phenylcarbinol to be subjected to a Friedel-Crafts acylation reaction. The method comprises the step of using the modified mordenite as a catalyst or catalyst component. According to the method provided by the invention, the modified mordenite with remarkable mesopore increment is obtained through jointly modifying the mordenite simply and mildly, and the modified mordenite can provide more reaction space for the Friedel-Crafts acylation reaction of the benzene and the phenylcarbinol, thus the conversion rate of the phenylcarbinol is increased.

Description

technical field [0001] The present invention relates to a modified mordenite, and further relates to a method for preparing the modified mordenite and its application in Friedel-Crafts alkylation of benzene and benzyl alcohol. Background technique [0002] The alkylation process is one of the important processes developed by the world oil refining industry, and its purpose is to produce high-octane alkylate oil and organic chemical intermediates. Alkylation products obtained by reacting alcohols, olefins, halogenated alkanes and other alkylating agents with isoparaffins and aromatic compounds are the basic raw materials or intermediates of a series of chemical reactions. Among them, diphenylmethane obtained by the Friedel-Crafts alkylation reaction of benzene and benzyl alcohol is one of the important products. [0003] At present, there are many kinds of catalysts used in the alkylation reaction, among which the most widely used molecular sieves are: Dong Hongjun et al. P...

Claims

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Application Information

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IPC IPC(8): C01B39/26C07C15/16C07C1/24B01J29/18
Inventor 李贤丰任冬梅林强R・普林斯J・A・布克霍文李金兵陈建设张志祥
Owner CHINA PETROLEUM & CHEM CORP
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