Preparation of WO3/ZrO2 nano microparticle catalyst supported on gamma-Al2O3

A nanoparticle and catalyst technology, applied in the field of chemistry, can solve problems such as limitations and small acid content

Inactive Publication Date: 2008-07-09
孙文东
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Because the above impregnation method is relatively simple, the specific surface of the sample is small, so its acid content is small, which is limited in application.

Method used

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  • Preparation of WO3/ZrO2 nano microparticle catalyst supported on gamma-Al2O3
  • Preparation of WO3/ZrO2 nano microparticle catalyst supported on gamma-Al2O3
  • Preparation of WO3/ZrO2 nano microparticle catalyst supported on gamma-Al2O3

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Embodiment 1

[0040] Prepare the AOT / iso-octane solution of 0.1mol / L, add the aqueous solution (0.01mol / L) of 0.045mLNaOH in the 5mLAOT / iso-octane solution, have obtained the reverse micelle solution of NaOH; Add 0.039mL ZrOCl to the alkane solution 2 (0.01mol / L) and 0.006mL SiO 2 ·12WO 3 26H 2 A mixed aqueous solution of O (0.01mol / L) was stirred at room temperature for 30 minutes until the system was transparent and clear, and SiO 2 ·12WO 3 26H 2 O and ZrOCl 2 Mix the reverse micellar solution; add the reverse micellar solution of NaOH to SiO dropwise using a dropping funnel 2 ·12WO 3 26H 2 O and ZrOCl 2 Mix the reverse micelles solution, cool with an ice-water bath, drop it within 90 minutes, and continue to stir for 22 hours to complete the reaction and obtain WO 3 / ZrO 2 Nanoparticles;

[0041] 10 ml of WO 3 / ZrO 2 Add 2 g of γ-Al to the reverse micellar solution of nanoparticles 2 o 3 (100 mesh), magnetically stirred for 24 hours, and filtered to obtain 2 o 3 WO on ...

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Abstract

The invention relates to a preparation method of a WO3ZrO2 nano micro particle catalyst loaded on Gamma-Al2O3, which is as below: first, the SiO2.12WO3.26H2O and ZrOCl2 mixed reverse micelles solution is obtained; the reverse micelles solution of NaOH is added into the SiO2.12WO3.26H2O and ZrOCl2 mixed reverse micelles solution drip by drip by a dropping funnel and cooled in ice water bath; dripping of the reverse micelles solution of NaOH is finished within 90 min; the mixed reverse micelles solution is continued to be mixed for 22 hours to complete the reaction, and the WO3ZrO2 nano micro particles are obtained; because of high acid content and acid strength, the product has strong disintegration capability to C12+ and C16+, so the yield of C5-C7 is high; similarly, because the product has strong capability of anti-inactivation and alkylation reaction, the yield of TMP is high, and that of the alkene is correspondingly reduced.

Description

technical field [0001] The present invention relates to a kind of loaded on γ-Al 2 o 3 WO on 3 / ZrO 2 The invention relates to the preparation of nanoparticle catalysts, belonging to the field of chemistry. Background technique [0002] WO 3 / ZrO 2 It is a composite oxide solid acid catalyst composed of tungsten trioxide and zirconium dioxide, which was discovered by Japanese Arata Kazushi and Hino Makoto in 1989 [1] , which is made by [2] : the concentrated ammonia (25.8%) solution is dropped into ZrOCl 2 ·8H 2 O(ZrOCl 2 10%) solution to make zirconium hydroxide precipitation to PH=9, after filtering, washing and drying, gained zirconium hydroxide precipitation is prepared in advance with ammonium tungstate [(NH 4 ) 5 h 5 [H 2 (WO 4 ) 6 ]·H 2 O] solution impregnated evenly, dried and roasted at a certain temperature for 4 hours to obtain WO 3 WO with different loading 3 / ZrO 2 Solid strong acid (denoted as IM-W). Because the above-mentioned impregnation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/30B01J21/06C07C2/58C07C6/00
Inventor 孙文东
Owner 孙文东
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