Sorbent of zeolite with carrying silver, preparation method and application thereof

A silver-loaded zeolite and adsorbent technology, applied in chemical instruments and methods, other chemical processes, separation/purification of carboxylic acid compounds, etc., can solve the corrosion of refining equipment, uneven distribution of coarse pores, and reduce the use efficiency of adsorbents and other problems, to achieve the effect of simple preparation method and high industrialization prospect.
CN100509138CActive Publication Date: 2009-07-08SHANGHAI HUAYI ENERGY CHEM +1
25 Cites 2 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI HUAYI ENERGY CHEM
Publication Date
2009-07-08

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
Patent Text Reader

Abstract

The invention discloses a silver-loaded zeolite adsorbent, a preparation method and application thereof. The silver-loaded zeolite adsorbent of the present invention is a silver-loaded acid-resistant zeolite, and the weight content of the silver is 7-15%. The silver-loaded zeolite adsorbent can be used to remove trace amounts of iodide in acetic anhydride products. Said zeolite has structural pores of 10 oxygen member rings and 12 oxygen member rings, high strength, uniform distribution of coarse pores between zeolite crystal grains and good acid resistance. The zeolite is used as a substrate to carry silver to make an adsorbent of silver-carrying acid-resistant zeolite, which has high adsorption effect on iodide molecules of different molecular sizes, has high strength, high silver-carrying amount, and excellent pore distribution. The silver-loaded zeolite adsorbent of the present invention has a simple and convenient preparation method, can effectively remove inorganic and / or organic iodide and / or molecular iodine in the crude product of acetic anhydride, and has a high prospect of industrial implementation.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a silver-loaded zeolite adsorbent and the application of its preparation method, in particular to the application of removing trace iodide in acetic anhydride products. technical background

[0002] Acetic anhydride is widely used in industry as an acetylating agent. In the United States, 95% of the production of acetic anhydride in Japan is used to produce cellulose acetate, triacetate cellulose containing 61.5-62% acetyl is used to manufacture high-strength, non-flammable photosensitive films, and diacetate containing 50-57% acetyl Cellulose is used to make cigarette filters and plastics. Acetic anhydride is also widely used in medicine, dyestuff, pesticide and fragrance industry.

[0003] U.S. Patents US 3,927,078, US 4,046,807, US 4,115,444, US 4,252,741, US 4,374,070, US 4,430,273, US 4,559,183, US 5,003,104, US 5,292,948 and European patents EP 8396, EP 87,869, EP 8396, 87,869 In the process, iodide participates in the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More