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Catalyst for direct synthesis of hydrogen peroxide

A hydrogen peroxide and catalyst technology, applied in the field of directly synthesizing and preparing hydrogen peroxide using the catalyst, directly synthesizing hydrogen peroxide, and manufacturing catalysts containing the catalytic nanoparticles, which can solve the problems of reducing H2O2 productivity and the like

Active Publication Date: 2018-01-02
UNIV COLLEGE CARDIFF CONSULTANTS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Any commercially viable catalyst needs to be reused without substantially reducing H 2 o 2 productivity

Method used

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  • Catalyst for direct synthesis of hydrogen peroxide
  • Catalyst for direct synthesis of hydrogen peroxide
  • Catalyst for direct synthesis of hydrogen peroxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0144] According to the above preparation method, SiO 2 and TiO 2 As a carrier, a series of monometallic catalysts and bimetallic catalysts were prepared by the impregnation method. The composition of each catalyst and the H 2 o 2 The production rates are listed in Table 1 together.

[0145] Table 1

[0146]

[0147] By comparing the H of the supported monometallic catalyst 2.5wt%Pd, 2.5wt%Sn and the supported bimetallic catalyst 2.5wt%Pd / 2.5wt%Sn 2 o 2 The sum of productivity, observed loading on TiO 2 and SiO 2 A clear synergistic effect between Pd and Sn.

Embodiment 2

[0149] SiO 2 and TiO 2 A series of catalysts were prepared for the support in which the total nominal content of Sn and Pd was fixed at 5 wt.%, and the contents of Sn and Pd were varied separately. A comparative catalyst containing only 5 wt.% Pd was also prepared. H was performed on each catalyst 2 o 2 Hydrogenation test. Catalyst composition and H 2 o 2 The hydrogenation test results are summarized in Table 2.

[0150] The results show that regardless of the Pd-Sn ratio, all TiO 2 or SiO 2 H of the supported palladium-tin bimetallic catalyst 2 o 2 Both hydrogenation / decomposition activities are lower than the corresponding palladium monometallic catalysts.

[0151] Table 2

[0152]

Embodiment 3a

[0154] To 1%Pd / 4%Sn / SiO in embodiment 2 2 The productivity of the catalyst was determined for the first use and the second use. The catalyst was heated at 200 °C in 5% H 2 / Ar for 2 hours, and the first and second use productivity and hydrogenation activity were measured. The catalyst was subsequently heat-treated by calcination at 400° C. in air for 3 hours. The results are summarized in Table 3.

[0155] It can be seen that the reduction treatment improves the H for the second use 2 o 2 productivity, but results in H 2 o 2 Increased hydrogenation activity. Further heat treatment provided a stable catalyst and completely suppressed the hydrogenation activity.

[0156] table 3

[0157]

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Abstract

Catalytic nanoparticles and catalysts comprising the same which are suitable for direct synthesis of hydrogen peroxide, a process for manufacturing catalysts comprising the catalytic nanoparticles, the use of the catalysts for direct synthesis of hydrogen peroxide, and a method of manufacturing hydrogen peroxide by direct synthesis using the catalysts.

Description

technical field [0001] The present invention relates to catalytic nanoparticles for the direct synthesis of hydrogen peroxide and catalysts comprising said catalytic nanoparticles, and to methods for the manufacture of catalysts comprising said catalytic nanoparticles, and to said catalysts for the direct synthesis of hydrogen peroxide The purposes of hydrogen peroxide, and relate to the method for using said catalyst to directly synthesize and prepare hydrogen peroxide Background technique [0002] Hydrogen peroxide is a simple inorganic molecule. Since its discovery, hydrogen peroxide has become an important commercial chemical for industrial and domestic use. In 2006, H 2 o 2 The annual output reaches 4 million metric tons and grows at an annual rate of 4%. About 40% H 2 o 2 Used in the pulp and paper industry as an alternative to chlorinated oxidizing agents such as chlorine dioxide and sodium chlorate. Because H 2 o 2 Can destroy thiocyanate, nitrate, chlorine,...

Claims

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Application Information

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IPC IPC(8): B01J23/44B01J23/14B01J23/62B01J23/52B01J23/89B01J23/60B01J37/02B01J37/08B01J37/12B01J37/18C01B15/029
CPCB01J23/60B01J23/626B01J23/892C01B15/029B01J37/12B01J37/16B01J35/30
Inventor 格雷姆·约翰·哈钦斯西蒙·弗瑞克里
Owner UNIV COLLEGE CARDIFF CONSULTANTS LTD
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