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Porous carrier as well as preparation method and application thereof

A technology of porous carrier and pore size, applied in catalyst carrier, chemical instrument and method, molecular sieve catalyst, etc., can solve the problems to be further improved, and achieve the effect of high pore size concentration

Active Publication Date: 2015-06-17
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although CN101757929A discloses that the pore concentration of the carrier can be more than 7, but from the examples disclosed in CN101757929A, the highest pore concentration of the carrier is 21.4, which needs to be further improved

Method used

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  • Porous carrier as well as preparation method and application thereof
  • Porous carrier as well as preparation method and application thereof

Examples

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preparation example Construction

[0032] The present invention also provides a method for preparing a porous carrier, which comprises mixing a precursor capable of forming a heat-resistant inorganic oxide under calcination conditions with a peptizer and water to provide a raw material; sending the raw material into an extrusion machine, and extrude after kneading in the extruder to obtain a molded body; the molded body is roasted to obtain the porous carrier, wherein the molded body is at the outlet of the extruder The temperature is 40~150℃.

[0033] In the process of extruding raw materials with an extruder to obtain a molded body, the cooling conditions of the extruder are generally controlled so that the temperature of the extruded molded body is about room temperature (less than 40° C.), but this The inventors of the invention found in the course of research that the temperature of the molded body at the outlet of the extruder is 40-150° C. to make the most probable pore diameter and pore diameter concent...

Embodiment 1

[0099] This example is used to illustrate the porous carrier and its preparation method according to the present invention.

[0100] Get 98.6g of CL powder (commercially purchased from Changling Catalyst Factory, dry basis content is 71% by weight, is a kind of pseudo-boehmite, relative crystallinity is 98.1%, and average particle diameter is 33nm, the same below), silicon-alumina Powder SIRAL 70 powder (commercially available from sasol company, 81% by weight on a dry basis, is a mixture of hydrates of aluminum oxide and hydrates of silicon oxide, calculated as oxides, the content of silicon oxide is 70% by weight, aluminum oxide The content is 30% by weight, the average particle diameter is 57nm, the same below) 37.1g, add 4g of squat powder and dry mix uniformly to obtain dry powder. Add 1.5mL of concentrated nitric acid (concentration: 65% by weight, the same below) and 3g of triethanolamine into a beaker containing 110mL of deionized water, and mix evenly to obtain an aci...

Embodiment 2

[0102] This example is used to illustrate the porous carrier and its preparation method according to the present invention.

[0103] Get 73.8g of C1 powder (commercially purchased from sasol company, dry basis content is 74.5% by weight, is a kind of pseudo-boehmite, relative crystallinity is 93.1%, and average particle diameter is 53nm), silica-alumina powder SIRAL 40 powder ( Commercially available from sasol company, dry basis content is 77.5% by weight, it is a mixture of hydrate of alumina and hydrate of silicon oxide, the content of silicon oxide is 40% by weight, and the content of aluminum oxide is 60% by weight %, the average particle diameter is 55nm, the same below) 51.6g, USY molecular sieve (unit cell constant is The relative crystallinity is 74.6%, and the dry basis content is 76.9% by weight) 6.5g, and 4g of safflower powder is dry-mixed evenly to obtain a dry powder. Add 3mL of concentrated nitric acid into a beaker containing 103mL of deionized water, and mi...

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Abstract

The invention provides a porous carrier as well as a preparation method and the application of the porous carrier. The porous carrier provided by the invention contains heat-resistant inorganic oxide, and has the most probable aperture of 1-30nm and the aperture concentration ratio of 22-48. The preparation method of the porous carrier comprises the following steps of: mixing precursor capable of forming the heat-resistant inorganic oxide under the condition of roasting, peptizing agent and water to provide a raw material; sending the raw material into an extruding machine, kneading the raw material in the extruding machine, and then extruding to obtain a molded body; and roasting the molded body to obtain the porous carrier, wherein the temperature of the molded body at an outlet of the extruding machine is 40-150 DEG C. The porous carrier not only has larger aperture, but also has higher aperture concentration ratio, thereby being particularly taken as a carrier of catalyst with the function of hydrogenation.

Description

technical field [0001] The invention relates to a porous carrier and its preparation method and application. Background technique [0002] In recent years, the trend of heavy and inferior crude oil has become increasingly obvious worldwide. At the same time, the demand for middle distillates, reforming and steam cracking raw materials has continued to increase. This promotes the rapid development of heavy distillate processing technology, and catalyst is the most important and key factor. [0003] Catalysts used for the conversion of heavy oil or macromolecules require not only a large pore size and sufficient pore volume, but also a concentrated pore size distribution of the pores in the catalyst (that is, a high pore size concentration). [0004] Since catalysts used for the conversion of heavy oil or macromolecules are generally obtained by loading catalytically active components on porous carriers, the preparation has larger pore diameter and pore volume, and has a high...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J32/00B01J35/10B01J21/12B01J29/08B01J29/70B01J29/40B01J29/16B01J29/78B01J29/48C10G47/20
Inventor 董松涛辛靖聂红石亚华李大东
Owner CHINA PETROLEUM & CHEM CORP
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