Microspheric precious metal adsorbent and preparation method thereof

A precious metal and adsorbent technology, applied in the field of adsorption, can solve the problems of small adsorption capacity of precious metals, inconvenient use and regeneration, unfavorable use and regeneration, etc., and achieve strong practical use value, excellent adsorption performance, and excellent adsorption performance of precious metals.
CN102397781AInactive Publication Date: 2012-04-04JIANGNAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
JIANGNAN UNIV
Publication Date
2012-04-04
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a microspheric precious metal adsorbent and a preparation method thereof, belonging to the technical field of adsorption. The microspheric precious metal adsorbent has uniform particles and a regular shape, contains sulfydryl and an amino group, has a space network structure, and is prepared by undergoing ring opening and condensation polymerization reactions on chloromethyl thiirane and para-phenylene diamine, suspending and polymerizing. The adsorbent is microspheric, can be filled into a columnar adsorbing device, has relatively high adsorption capacities on Au (III) and Ag (I), has high adsorbing performance on Hg (II) and Cu (II), and has relatively high practical utilization value.
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Description

technical field

[0001] A microsphere-type precious metal adsorbent and a preparation method thereof relate to reaction design and a synthesis method thereof, and belong to the field of adsorption technology. Background technique

[0002] Because of its high adsorption capacity, low cost and easy operation, chelating agents are of great significance in recovering concentrated precious metals and removing heavy metal ions in water. For example, Xu Yuwu and others synthesized thiourea resin, and Dong Shihua et al proposed an interpenetrating network type mercaptoamine resin. Most of the chelating resins reported in the literature are in amorphous form such as powder. Although they have a large adsorption capacity for noble metals, they are inconvenient to use and regenerate. There are also very few chelating agents that introduce chelating groups on styrene microspheres, but due to the low content of nitrogen and sulfur, the adsorption capacity for noble metals is very small. ...

Claims

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