Y/Gd2O3/ZSM-23/ZSM-5/ASA composite material and preparation method thereof

A technology of ZSM-23 and composite materials, which is applied in the direction of chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., can solve the problems of adding auxiliary equipment, increasing the cost of synthesizing composite molecular sieves, and long preparation time

Active Publication Date: 2017-12-29
PETROCHINA CO LTD
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the preparation time is longer
[0013] The preparation methods of micro-mesoporous composite materials mentioned in the above documents or patents are either complicated in process or take a long time in the synthesis process
CN102000604A introduces a microwave treatment process in the

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Y/Gd2O3/ZSM-23/ZSM-5/ASA composite material and preparation method thereof
  • Y/Gd2O3/ZSM-23/ZSM-5/ASA composite material and preparation method thereof
  • Y/Gd2O3/ZSM-23/ZSM-5/ASA composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0053] Example 1:

[0054] Y / Gd 2 O 3 / ZSM-23 / ZSM-5 / ASA composite material synthesis

[0055] (1) Preparation of directing agent: Take 24.7g of sodium hydroxide (Beijing Chemical Plant, analytically pure) into 45.9g of water, stir until all the sodium hydroxide is dissolved, and then add 6.5g of sodium metaaluminate (Shandong Aluminum Company Research) Hospital, industrial products, Al 2 O 3 The content is 49.1wt%), stirring until all the sodium metaaluminate is dissolved, and the sodium metaaluminate solution A is obtained. 70g solution A and 100g water glass (Beijing Red Star Sodium Alkaline Plant, SiO 2 Content 27.81wt%, Na 2 O content 8.74wt%) was sequentially poured into 65.5g of deionized water, stirred evenly and statically aged at 30°C for 22h to obtain a directing agent. The molar ratio of each component of the directing agent is: 16Na 2 O:Al 2 O 3 :16SiO 2 :330H 2 O.

[0056] (2)Gd 2 O 3 / ZSM-23 / ZSM-5 precursor preparation: using a solid-like synthesis method (single pot ...

Example Embodiment

[0060] Example 2:

[0061] Unless otherwise specified, the sources of all raw materials are the same as in Example 1.

[0062] (1) Preparation of the directing agent: add 32.1g of sodium hydroxide to 45.9g of water, stir until the sodium hydroxide is completely dissolved, then add 6.5g of sodium metaaluminate, and stir until the sodium metaaluminate is completely dissolved to obtain metaaluminate Sodium solution A. Pour 70 g of solution A and 112 g of water glass into 79 g of deionized water in sequence, stir evenly, and statically age at 30°C for 22 hours to obtain a directing agent. The molar ratio of each component of the directing agent is: 20Na 2 O:Al 2 O 3 :18SiO 2 :440H 2 O.

[0063] (2)Gd 2 O 3 / ZSM-23 / ZSM-5 precursor preparation: using a solid-like synthesis method (50% solid content in a single pot), using coarse-pored silica gel, sodium metaaluminate, deionized water, trimethylamine and hexamethylene diamine as raw materials, Crystallize at a constant temperature of 100...

Example Embodiment

[0067] Example 3

[0068] Unless otherwise specified, the sources of all raw materials are the same as in Example 1.

[0069] (1) Preparation of directing agent: Take 24.7g of sodium hydroxide and add it to 45.9g of water, stir until the sodium hydroxide is completely dissolved, then add 6.5g of sodium metaaluminate, and stir until the sodium metaaluminate is completely dissolved to obtain metaaluminate Sodium solution A. Pour 70 g of solution A and 100 g of water glass into 65.5 g of deionized water in turn, stir evenly and statically age at 30° C. for 22 hours to obtain a directing agent. The molar ratio of each component of the directing agent is: 16Na 2 O:Al 2 O 3 :16SiO 2 :330H 2 O.

[0070] (2)Gd 2 O 3 / ZSM-23 / ZSM-5 precursor preparation: using a solid-like synthesis method (50% solid content in a single pot), using coarse-pored silica gel, sodium metaaluminate, deionized water, trimethylamine and hexamethylene diamine as raw materials, Crystallize at a constant temperature ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Total pore volumeaaaaaaaaaa
Pore volumeaaaaaaaaaa
Mesopore volumeaaaaaaaaaa
Login to view more

Abstract

The invention provides a method for preparing a Y/Gd2O3/ZSM-23/ZSM-5/ASA composite material containing regular mesopores. The method comprises the following steps: firstly, preparing a guiding agent, preparing a Gd2O3/ZSM-23/ZSM-5 precursor; synthesizing a Y/Gd2O3/ZSM-23/ZSM-5 composite molecular sieve by adopting a hydrothermal crystallization method; adding a surfactant and an alkaline aluminum-source solution into the slurry containing the molecular sieve, adjusting the pH value; and washing, drying and roasting the precipitated product to obtain the Y/Gd2O3/ZSM-23/ZSM-5/ASA composite material. In the Y/Gd2O3/ZSM-23/ZSM-5/ASA composite material, the differential thermal failure temperature of the Y molecular sieve can be higher than 950 DEG C, the grain size is kept to be lower than 400nm. The composite material has the porous distribution characteristics of micropore-mesopore, mesopores in the surface ASA are regular mesopores, and the mesoporous size can be adjusted by changing the synthesizing process condition.

Description

technical field [0001] The invention provides a Y / Gd 2 o 3 / ZSM-23 / ZSM-5 / ASA composite material and preparation method thereof, specifically, is a kind of by Y molecular sieve, Gd 2 o 3 , ZSM-23 / ZSM-5 molecular sieve and amorphous silica-alumina (ASA) composite material coated in situ. Background technique [0002] Molecular sieve complex refers to a composite material that combines molecular sieves and other substances through the interaction between molecules, atoms or ions. Regular materials with mesoporous structures such as MCM-41 mesoporous molecular sieves are suitable for the transformation of organic macromolecules due to their large pore structure, but their poor thermal stability, hydrothermal stability and weak acidity limit their Applications of this type of material in the field of catalysis. The research on microporous-mesoporous composite materials based on high stability and strong acidic microporous molecular sieves has important industrial application...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B01J29/80
Inventor 李海岩赵晶莹谢方明孙发民秦丽红王斯晗于春梅王燕王亮张文成郭金涛张志华王伟众吕倩张全国郭立艳倪术荣王甫村靳丽丽董春明王旭东王广飞丰铭李金鑫
Owner PETROCHINA CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap