Preparation method of high silver carrying ZSM-5 zeolite deiodine adsorbing agent

A technology of ZSM-5 and adsorbent, which is applied in the field of effective deiodination adsorbent, can solve the problems affecting the amount of silver loaded on the deiodination adsorbent, hindering the diffusion of silver ions, etc., and achieves the effect of simple operation and low cost
CN1201859CInactive Publication Date: 2005-05-18SHANGHAI WUJING CHEM +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI WUJING CHEM
Publication Date
2005-05-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a preparation method of a ZSM-5 zeolite adsorbent with high silver-loaded content used for removing iodide in acetic acid. The prior art has high cost, high price and complicated production operation process. Adsorbent of the present invention is made of SiO 2 / Al 2 o 3 The H-ZSM-5 zeolite powder with ≈15~30 is made by bonding molding, crystal transformation, and then exchanged with silver ions, and its maximum silver loading can reach 20%. The adsorbent can effectively remove organic iodide, inorganic iodide and molecular iodine in acetic acid.
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Description

technical field

[0001] The invention relates to a method for using ZSM-5 zeolite with high silver loading as an effective deiodination adsorbent. Background technique

[0002] As an important industrial raw material, acetic acid has a wide range of applications. At present, more than 90% of the products are produced by methanol low pressure oxo synthesis. Since iodide is used as a catalyst promoter in this process, iodide or its derivatives inevitably exist in the final product. Although most iodides can be removed by conventional distillation, rectification or treatment with certain chemicals, trace amounts of iodides (derivatives) will remain in the product. These traces of iodides are difficult to remove by traditional methods, and the existence of these traces of iodides has limited the application of the acetic acid produced by this method. In particular, it cannot be used in the production process using iodine-sensitive metals as catalysts. For example, in the prod...

Claims

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