Composite oxide carrier and preparation method thereof

A composite oxide and carrier technology, which is applied in catalyst carriers, chemical instruments and methods, chemical/physical processes, etc., can solve the problems that the carrier is difficult to satisfy the high specific surface, uneven distribution of zirconia, and high preparation cost at the same time. Pore ​​volume, acidity and alkalinity can be adjusted, and the preparation cost is low.

Active Publication Date: 2009-05-20
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0005] Chinese patent CN01116022.5 prepared a complex of titanium dioxide and silicon dioxide or titanium dioxide and alumina by the sol-gel method, although the specific surface>400m 2 /g, pore volume>0.6ml/g, adjustable acidity, but the drying process requires supercritical drying, the cost is high, and it does not contain zirconium that can promote catalytic performance
[0006] Chinese patent CN00123133.2 discloses a zirconium-containing alumina carrier and its preparation method. The zirconium-containing alumina carrier is obtained by adding a zirconium-containing compound in the form of kneading during the moldi

Method used

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  • Composite oxide carrier and preparation method thereof

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Effect test

Embodiment 4

[0047] According to experiment number 1 carrier raw material ratio and operating conditions, add mixed surfactant 4 when gelling, it is composed of: mixed surfactant 2: polyvinyl alcohol 150000=1:1 (weight ratio), wherein ammoniacal liquor: mixed Surfactant 4=5:1 (weight ratio). The composite oxide carrier was obtained, and its main properties are listed in Tables 1 and 2.

[0048] Experiment number 12: Example 5

[0049] According to experiment number 2 carrier raw material ratio and operating conditions, add mixed surfactant 5 when forming a gel, and it is composed of: mixed surfactant 1: polyvinyl alcohol 20000: polyvinyl alcohol 50000: polyvinyl alcohol 150000=1: 1:1:1 (weight ratio), wherein ammonia: mixed surfactant 5=20:1 (weight ratio). The composite oxide carrier was obtained, and its main properties are listed in Tables 1 and 2.

Embodiment 6

[0051] According to experiment number 2 carrier raw material ratio and operating conditions, add mixed surfactant 6 when forming a gel, and its composition is: mixed surfactant 2: methylcellulose 50000: methylcellulose 100000=5:1:1 (weight ratio), wherein ammoniacal liquor: mixed surfactant 5=20:1 (weight ratio). The composite oxide carrier was obtained, and its main properties are listed in Tables 1 and 2.

[0052] Experiment No. 14: Example 7

[0053] According to experiment number 2 carrier raw material ratio and operating conditions, add mixed surfactant 7 when forming gel, it is composed of: mixed surfactant 2: hydroxypropyl methylcellulose 150000: hydroxypropyl methylcellulose 100000 : Propyl cellulose 100000=3:1:1:1 (weight ratio), wherein ammonia: mixed surfactant 5=20:1 (weight ratio). The composite oxide carrier was obtained, and its main properties are listed in Tables 1 and 2.

[0054] Experiment No. 15: Example 8

[0055] According to experiment number 4 carri...

Embodiment 9

[0057] According to experiment number 7 carrier raw material ratio and operating conditions, add mixed surfactant 9 when aging, it is composed of: mixed surfactant 1: polyvinyl alcohol 20000: caproyl acetone = 1:25:5 (weight ratio) , wherein the addition of tensio-active agent is 10% (weight ratio) of ammoniacal liquor. The composite oxide carrier was obtained, and its main properties are listed in Tables 1 and 2.

[0058] Table 1 Proportion of each oxide in the composite oxide support (mass percentage)

[0059] serial number SiO 2 % ZrO 2 % Al 2 o 3 % 1 37 10 53 2 16 6 78 3 16 6 78 4 30 9 61 5 30 9 61 6 12.5 2.5 85 7 70 2 28 8 12.5 2.5 85 9 12.5 2.5 85 10 12.5 2.5 85 11 37 10 53 12 16 6 78 13 16 6 78 14 16 6 78 15 30 9 61 16 70 2 28

[0060] Table 2 Physical properties of composite oxide supports

[0061]

[0062] Note: 1. DA is the aver...

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Abstract

The invention relates to a compound oxide carrier and a preparation method, and belongs to the filed of catalyst preparation, wherein the compound oxide carrier is prepared by compounding gamma-aluminum oxide, silicon dioxide and zirconium dioxide. The method comprises the following steps: co-precipitating precursors of the aluminum oxide, the silicon dioxide and the zirconium dioxide with alkali solution, adding surfactant into the mixture to improve the pore structure and acidity and alkaline, then washing, filtering and roasting the obtained sediment at high temperature to obtain compound oxide powder, and finally extruding and molding the compound oxide powder to obtain the carrier. The pore structure and the acidity and the alkaline of the obtained carrier have wide adjustable ranges, the specific surface of the carrier is 200 to 500 m<2> per gram, the pore volume thereof is 0.4 to 1.2 milliliters per gram, and the total acid amount of NH3-TPD is 0.2 to 0.8mmol/g. The carrier prepared by the method is suitable for preparing hydrogenation catalysts of petroleum fractions.

Description

technical field [0001] The invention relates to a preparation method of a hydrogenation refining catalyst carrier, in particular to a composite oxide carrier and a preparation method thereof. Background technique [0002] The preparation process of alumina carrier is simple, the specific surface is high, the mechanical strength is good, and the pore size is suitable. It is one of the most widely used catalyst carriers at present. The preparation and modification of alumina carrier and the preparation of aluminum-containing composite oxides have always been scientific research The direction of worker research. [0003] Chinese patent CN03133563.2 introduces a preparation method of silicon-phosphorous alumina with large pore volume and suitable surface acid properties. Use sodium metaaluminate, silicon-containing compound and carbon dioxide gas to react into a gel, filter, wash, dry, and roast to obtain a composite alumina carrier with a specific surface of 260-350m 2 / g, th...

Claims

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Application Information

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IPC IPC(8): B01J32/00B01J21/12
Inventor 徐黎明高玉兰曹凤兰陈光李崇惠
Owner CHINA PETROLEUM & CHEM CORP
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