Molecular sieve catalyst for preparing low-carbon mixed alcohol from synthesis gas

Molecular sieve catalyst for preparing low-carbon mixed alcohol from synthesis gas

  • CN 105,536,853 B
  • Filed: 02/01/2016
  • Issued: 06/26/2020
  • Est. Priority Date: 02/01/2016
  • Status: Active Grant
First Claim
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1. A molecular sieve catalyst for preparing low-carbon mixed alcohol from synthesis gas comprises an active component, a carrier and a binder;

  • the active component is nano active carbon, and the mass percentage content is 2%;

    the carrier is a nano molecular sieve with the mass percentage of 62 percent;

    the balance being binder;

    the particle size of the nano activated carbon is 1 nm;

    the nano molecular sieve is a TS-1 molecular sieve, the grain size of the nano molecular sieve is 50 nanometers, and the SiO of the molecular sieve2/Al2O3The molar ratio is 350;

    the binder is silica sol and Al2O3The mixture consists of nano diatomite and guar gum, and the proportion of the nano diatomite to the guar gum is 2.2;

    10;

    0.8;

    0.1;

    the preparation method of the molecular sieve catalyst for preparing the low-carbon mixed alcohol from the synthesis gas comprises the following steps;

    (1) soaking 0.5mol/L ammonium nitrate aqueous solution of the nano molecular sieve at normal temperature for 10 hours at a solid-to-liquid ratio of 1g;

    10mL, and then filtering and washing to obtain a semi-finished product of the nano molecular sieve catalyst;

    (2) adding binder and nano activated carbon into the obtained semi-finished product of the nano molecular sieve catalyst, uniformly mixing, rolling balls or extruding strips, naturally airing, and then placing in a dryer for drying at 60 ℃

    ;

    (3) heating to 620 ℃

    by program, roasting for 4.2 hours, wherein the oxygen content in the roasting furnace is lower than 1% in the roasting process, and preparing a formed molecular sieve;

    when the molecular sieve catalyst is used for preparing low-carbon mixed alcohol, the content of the obtained ethanol is 90.8%.

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