A kind of preparation method of dihydroxy-benzene

A kind of preparation method of dihydroxy-benzene

  • CN 101,759,530 B
  • Filed: 12/25/2008
  • Issued: 07/29/2015
  • Est. Priority Date: 12/25/2008
  • Status: Active Grant
First Claim
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1. the preparation method of a dihydroxy-benzene, it is characterized in that the method comprises benzene and hydrogen peroxide at titanium-silicon molecular sieve catalyst with only there is aqueous solvent to exist, and temperature be normal temperature ~ 150 DEG C, pressure is contact reacts under normal pressure ~ 1.0MPa condition, catalyzer is isolated after reaction terminates, reaction mixture is divided into oil phase and aqueous phase, aqueous phase carries out separating-purifying and obtains dihydroxy-benzene, oil phase recycles, wherein said HTS is TS-1, there is hollow structure, the chamber portion radical length of its hollow structure crystal grain is 5 ~ 300nm, at 25 DEG C, P/P 0the benzene adsorptive capacity of adsorbing 1 hour under=0.1 condition is at least 70 milligrams/grams, there is hysteresis loop between the adsorption isothermal line of nitrogen absorption under low temperature and desorption isotherm.

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