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Binding agent for industrial forming of powder catalyst and application of industrial molding binding agent in preparation of formed catalyst

A technology for forming binders and catalysts, which is used in catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc. The effect of high efficiency and convenient operation

Active Publication Date: 2017-10-24
ZHEJIANG TIANLAN ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the adhesive has strong bonding strength and peeling bonding performance, it is only suitable for the bonding between metal and rubber, and cannot be well applied to the molding of catalysts.

Method used

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  • Binding agent for industrial forming of powder catalyst and application of industrial molding binding agent in preparation of formed catalyst
  • Binding agent for industrial forming of powder catalyst and application of industrial molding binding agent in preparation of formed catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The honeycomb ceramics with a pore diameter of 2 mm are cut into cube pieces whose length, width and height are 21 mm × 21 mm × 35 mm.

[0035] a) Preparation of powder catalyst industrial molding binder

[0036] a1) 0.50g methyltrimethoxysilane, 0.31g dimethyldimethoxysilane, 0.11g ethyl acetate, 0.02g ethylene glycol butyl ether, 0.07g phthalic acid bis(2-ethylhexyl ) ester, mixed with 0.04g methanol to obtain component A;

[0037] a2) Mix 6.03g methyltrimethoxysilane, 2.25g dimethyldimethoxysilane, 0.27g tetraisopropyl titanate, 0.18g methanol, and 0.27g propylene glycol methyl ether to obtain component B, silica sol pH = 8.0;

[0038] a3) Slowly raise the temperature of component A from normal temperature to 100°C, react at this temperature for 10 minutes, add component B, 10g of silica sol and 5g of ethanol, and stir thoroughly for 30 minutes to prepare a powder catalyst for industrial molding bonding agent.

[0039] b) Preparation of Shaped Catalyst P1

[004...

Embodiment 2

[0052] The honeycomb ceramics with a pore diameter of 2 mm are cut into cube pieces whose length, width and height are 21 mm × 21 mm × 35 mm.

[0053] a) Preparation of powder catalyst industrial molding binder

[0054] a1) 0.70g methyltrimethoxysilane, 0.12g dimethyldimethoxysilane, 0.06g diethyl acetate, 0.01g ethylene glycol butyl ether, 0.07g dimethyl phthalate, 0.14g Methanol is mixed to obtain component A;

[0055] a2) Mix 6.81g methyltrimethoxysilane, 2.54g dimethyldimethoxysilane, 0.30g n-propyl titanate, 0.20g methanol, 0.30g dipropylene glycol dimethyl ether to obtain component B, silicon The pH of the sol=9.0;

[0056] a3) Slowly raise the temperature of component A from normal temperature to 100°C, react at this temperature for 10 minutes, add component B, 10g of silica sol and 5g of water, and stir thoroughly for 30 minutes to prepare a powder catalyst for industrial molding bonding agent.

[0057] b) Preparation of Shaped Catalyst P2

[0058] b1) Add 3 g of ...

Embodiment 3

[0064] The honeycomb ceramics with a pore diameter of 2 mm are cut into cube pieces whose length, width and height are 21 mm × 21 mm × 35 mm.

[0065] a) Preparation of powder catalyst industrial molding binder

[0066] a1) 0.50g methyltrimethoxysilane, 0.31g dimethyldimethoxysilane, 0.11g propyl acetate, 0.02g ethylene glycol butyl ether, 0.07g di-sec-octyl phthalate, 0.04g Methanol is mixed to obtain component A;

[0067] a2) Mix 10.50g methyltrimethoxysilane, 3.00g dimethyldimethoxysilane, 0.15g tetrabutyl titanate, 0.45g methanol, and 0.90g methyl tert-butyl ether to obtain component B, The pH of silica sol=10.0;

[0068] a3) Slowly raise the temperature of component A from normal temperature to 100°C, react at this temperature for 10 minutes, add component B, 10g of silica sol and 5g of n-hexane, stir thoroughly for 30 minutes, and prepare a powder catalyst industrial molding stick Binder.

[0069] b) Preparation of Shaped Catalyst P3

[0070] b1) Add 3 g of powdery ...

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PUM

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Abstract

The invention discloses a binding agent. The binding agent is prepared from a component A, a component B and silica sol, wherein the component A is prepared from 20-60 parts by weight of methyltrimethoxysilane, 10-40 parts by weight of dimethoxydimethylsilane, 3-12 parts by weight of an esters solvent, 0.1-3 parts by weight of ethylene glycol butyl ether, 5-15 parts by weight of an esters plasticizer and 2-10 parts by weight of methyl alcohol; the component B is prepared from 45-75 parts by weight of methyltrimethoxysilane, 10-40 parts by weight of dimethoxydimethylsilane, 0.5-5 parts by weight of a cross-linking agent, 1-6 parts by weight of methyl alcohol and 1-7 parts by weight of a solvent; a weight ratio of the component A, the component B and silica sol is (0.01-0.3):(0.5-1.5):1. The invention provides a preparation method of the binding agent. The binding agent is applied to binding forming of catalysts on plate type catalyst supports, honeycomb type catalyst supports and corrugated plate type catalyst supports, and the catalysis efficiency of the catalyst is not affected.

Description

technical field [0001] The invention relates to the field of binders, in particular to a powder catalyst industrial molding binder and its application in preparing molded catalysts. Background technique [0002] Nitrogen oxides (NO x ) and volatile organic compounds (VOCs) are air pollutants that are harmful to the environment and human health. In Governance NO x Among the technologies, ammonia selective catalytic reduction (SCR) technology has been widely used for its efficient and reliable denitrification performance, and the core of this technology is the denitrification catalyst. There are currently two types of VOCs treatment: one is recyclable treatment technology such as adsorbent absorption method, etc.; the other is destructive treatment technology such as combustion method, catalytic oxidation method, etc., and the catalyst is catalytic oxidation method to degrade VOCs key. [0003] Taking SCR catalyst as an example, the SCR denitrification molded catalyst comm...

Claims

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Application Information

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IPC IPC(8): B01J35/04B01J35/06B01J37/00B01J37/02
CPCB01J37/0009B01J37/0203B01J35/58B01J35/56
Inventor 翁小乐尚媛吴忠标王海强刘越
Owner ZHEJIANG TIANLAN ENVIRONMENTAL PROTECTION TECH