Preparation method of catalyst with white carbon black modified by Zr—Nd—O

Patent metadata

Field	Value
Publication number	US-11426719-B2
Application number	US-202016736616-A
Country	US
Kind code	B2
Filing date	Jan 7, 2020
Priority date	Jan 15, 2019
Publication date	Aug 30, 2022
Grant date	Aug 30, 2022

Abstract

The present invention discloses a preparation method of a catalyst with white carbon black modified by Zr—Nd—O and use thereof, and belongs to the field of catalyst technologies. In the present invention, an organic solvent evaporation induced self-assembly method is used to load Zr—Nd—O onto white carbon black to obtain a mesoporous Zr—Nd—O/white carbon black catalyst. The mesoporous Zr—Nd—O/white carbon black catalyst in the present invention has high catalytic activity, contains uniformly distributed mesopores with a relatively large average aperture, and has a simple preparation process, etc.

First claim

What is claimed is:

1. A preparation method of a catalyst with white carbon black modified by Zr—Nd—O, comprising the following specific steps:
(1) adding sodium chloride and ethanol to sodium silicate, uniformly mixing, and slowly adding water under stirring until sodium silicate colloidal particles are dissolved, to obtain an ethanol-sodium silicate solution mixture;
(2) adding sulfuric acid to the ethanol-sodium silicate solution mixture in step (1) at 25-45° C. under stirring to adjust a pH value of the system to 7.5-9.5; and conducting aging at 70-110° C. for 10-20 h to obtain white carbon black;
(3) adding the white carbon black in step (2) to ethanol under stirring, adding zirconium nitrate, neodymium nitrate, and a surfactant, and conducting reaction for 5-10 h to obtain a mixed white carbon black solution;
(4) evaporating ethanol from the mixed white carbon black solution in step (3) at 50-70° C. to obtain a precursor; and
(5) calcining the precursor in step (4) at 300-500° C. for 2-4 h to obtain a mesoporous Zr—Nd—O/white carbon black catalyst.

2. The preparation method according to claim 1 , wherein a ratio of the sodium chloride to the sodium silicate in step (1), i.e., a solid-to-liquid ratio, is 1 g:(10-15) mL, and a volume ratio of the ethanol to the sodium silicate is 1:(0.8-1.2).

3. The preparation method according to claim 1 , wherein the surfactant in step (3) is a triblock copolymer P123, F127, or F108.

4. The preparation method according to claim 1 , wherein in step (3), a mass ratio of the zirconium nitrate to the white carbon black is 1:(1-2); a mass ratio of the neodymium nitrate to the white carbon black is 1:(3.3-6.7); and a mass ratio of the surfactant to the white carbon black is 1:(1-2).

5. Use of a mesoporous Zr—Nd—O/white carbon black catalyst prepared by using the preparation method of a catalyst with white carbon black modified by Zr—Nd—O according to claim 1 in simultaneously removing PH 3 and AsH 3 through catalysis.

6. Use of a mesoporous Zr—Nd—O/white carbon black catalyst prepared by using the preparation method of a catalyst with white carbon black modified by Zr—Nd—O according to claim 2 in simultaneously removing PH 3 and AsH 3 through catalysis.

7. Use of a mesoporous Zr—Nd—O/white carbon black catalyst prepared by using the preparation method of a catalyst with white carbon black modified by Zr—Nd—O according to claim 3 in simultaneously removing PH 3 and AsH 3 through catalysis.

8. Use of a mesoporous Zr—Nd—O/white carbon black catalyst prepared by using the preparation method of a catalyst with white carbon black modified by Zr—Nd—O according to claim 4 in simultaneously removing PH 3 and AsH 3 through catalysis.

Assignees

• Univ Kunming Science & Technology

Inventors

• Li Kai
• Wang Yingwu
• Ning Ping
• Lin Qiang
• Sun Xin
• Wang Chi
• Song Xin
• Chen Xiao

Classifications

• B01D2255/702

  Carbon · CPC title

• B01D2256/24

  Hydrocarbons · CPC title

• B01J37/088

  Decomposition of a metal salt · CPC title

• B01D53/8671

  Removing components of defined structure not provided for in B01D53/8603 - B01D53/8668 · CPC title

• B01J37/04 Primary

  Mixing {(B01J37/0009, B01J37/0018 take precedence)} · CPC title