Title:
WATER-SOLUBLE PD(II) COMPLEX, SYNTHETIC METHOD THEREFOR, AND USE THEREOF AS CATALYTIC PRECURSOR
Document Type and Number:
WIPO Patent Application WO/2023/221556
Kind Code:
A1
Abstract:
Provided are a water-soluble Pd(II) complex, a synthetic method therefor, and the use thereof as a catalytic precursor. The chemical name of the water-soluble Pd(II) complex is ammonium di(nitroso)oxalate palladate, and the molecular formula thereof is (NH4)2[Pd(NO2)2(C2O4)]·nH2O (n being the number of crystal water). The Pd(II) complex is synthesized by taking PdCl2 or an intermediate product [Pd(NH3)2Cl2] obtained by the wet refining of palladium as a starting material, first reacting same with ammonia water to convert same into [Pd(NH3)4]Cl2, then reacting same with an excess of NaNO2 to obtain trans-[Pd(NH3)2(NO2)2], and finally reacting same with oxalic acid to obtain a target product, i.e., (NH4)2[Pd(NO2)2(C2O4)]·2H2O. The complex contains no chlorine and other elements (such as K, Na, S and P) that are harmful to a catalyst, and has a high water solubility and a low thermal decomposition temperature. A supported palladium-based catalyst prepared by using the complex as a catalytic precursor has a very high catalytic activity, and the complex is a very good palladium catalytic precursor.
Inventors:
LIU WEIPING (CN)
YU JUAN (CN)
CHEN LI (CN)
GAO ANLI (CN)
DAI YUNSHENG (CN)
LIU FENG (CN)
JIANG JING (CN)
XIE JIYANG (CN)
ZHOU HAO (CN)
CHANG QIAOWEN (CN)
YAN CAIXIAN (CN)
YU JUAN (CN)
CHEN LI (CN)
GAO ANLI (CN)
DAI YUNSHENG (CN)
LIU FENG (CN)
JIANG JING (CN)
XIE JIYANG (CN)
ZHOU HAO (CN)
CHANG QIAOWEN (CN)
YAN CAIXIAN (CN)
Application Number:
PCT/CN2023/074256
Publication Date:
November 23, 2023
Filing Date:
February 02, 2023
Export Citation:
Assignee:
YUNNAN PRECIOUS METALS LABORATORY CO LTD (CN)
International Classes:
C07F15/00; B01D53/44; B01D53/86; B01J20/08; B01J20/30; B01J23/44
Foreign References:
| CN114805449A | 2022-07-29 | |||
| CN101362781A | 2009-02-11 | |||
| CN109897070A | 2019-06-18 |
Other References:
ZADESENETS A.V., ASANOVA T.I., VIKULOVA E.S., FILATOV E.YU., PLYUSNIN P.E., BAIDINA I.A., ASANOV I.P., KORENEV S.V.: "Solid solutions of platinum(II) and palladium(II) oxalato-complex salt as precursors of nanoalloys", JOURNAL OF SOLID STATE CHEMISTRY, ORLANDO, FL, US, vol. 199, 1 March 2013 (2013-03-01), US , pages 71 - 77, XP093109284, ISSN: 0022-4596, DOI: 10.1016/j.jssc.2012.12.006
NAKAMURA MICHIHIRO, FUJIWARA SHIZUO: "Electron spin resonance of palladium(I). IV. Mixed-ligand complexes of palladium(I)", THE JOURNAL OF PHYSICAL CHEMISTRY, AMERICAN CHEMICAL SOCIETY, vol. 78, no. 21, 1 October 1974 (1974-10-01), pages 2136 - 2140, XP093109286, ISSN: 0022-3654, DOI: 10.1021/j100614a014
LI XUE, ZHANG YANG-YANG, XUE LIU, JIANG AN-LI, JUAN Y U: "Synthesis, Characterization and Performance Study of [Pt（NH3）4]（OH）2·2H2O and [Pd（NH3）4]（OH）2", PRECIOUS METALS., vol. 41, no. S1, 1 November 2020 (2020-11-01), pages 139 - 145, XP093109287
NAKAMURA MICHIHIRO, FUJIWARA SHIZUO: "Electron spin resonance of palladium(I). IV. Mixed-ligand complexes of palladium(I)", THE JOURNAL OF PHYSICAL CHEMISTRY, AMERICAN CHEMICAL SOCIETY, vol. 78, no. 21, 1 October 1974 (1974-10-01), pages 2136 - 2140, XP093109286, ISSN: 0022-3654, DOI: 10.1021/j100614a014
LI XUE, ZHANG YANG-YANG, XUE LIU, JIANG AN-LI, JUAN Y U: "Synthesis, Characterization and Performance Study of [Pt（NH3）4]（OH）2·2H2O and [Pd（NH3）4]（OH）2", PRECIOUS METALS., vol. 41, no. S1, 1 November 2020 (2020-11-01), pages 139 - 145, XP093109287
Attorney, Agent or Firm:
KUNMING JINWEI PATENT & TRADEMARK AGENT CO., LTD. (CN)
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