Palladium Nanoparticles Entrapped In a Hydrogen Bonded Crystalline Organic Salt Matrix as a Selective Heterogeneous Reduction Catalyst

被引：2

作者：

Kuznetsova, Svetlana A. ^{[1
]}

Yunusov, Safar M. ^{[1
]}

Gak, Alexander S. ^{[2
]}

Riazanov, Vladimir, I ^{[3
]}

Nelyubina, Yulia, V ^{[1
]}

Barker, Ryan ^{[4
]}

North, Michael ^{[4
]}

Zhereb, Vladimir P. ^{[5
]}

Khakina, Ekaterina A. ^{[1
]}

Naumkin, Alexander ^{[1
]}

Lobanov, Nikolai N. ^{[6
]}

Khrustalev, Victor N. ^{[6
]}

Chusov, Denis ^{[1
]}

Kalyuzhnaya, Elena S. ^{[1
]}

Belokon, Yuri N. ^{[1
]}

机构：

[1] Russian Acad Sci, AN Nesmeyanov Inst Organoelement Cpds, Vavilov St 28, Moscow 119991, Russia

[2] Moscow MV Lomonosov State Univ, Fac Mat Sci, Leninskie Gory 1-40, Moscow 119991, Russia

[3] D Mendeleev Univ Chem Technol Russia, Miusskaya Sq 9, Moscow 125047, Russia

[4] Univ York, Green Chem Ctr Excellence, Dept Chem, York YO10 5DD, N Yorkshire, England

[5] Siberian Fed Univ, Sch Nonferrous Met & Mat Sci, 95 Krasnoyarskiy Rabochiy Pr, Krasnoyarsk 660025, Russia

[6] Peoples Friendship Univ Russia, Rudn Univ, 6 Miklukho Maklaya St, Moscow 117198, Russia

来源：

CHEMISTRYSELECT | 2022年 / 7卷 / 41期

基金：

俄罗斯科学基金会;

关键词：

charge assisted hydrogen bonded frameworks; palladium nanoparticles; selective heterogeneous reduction catalysts; synergistic organic and metal catalyst; METAL NANOPARTICLES; BINDING-ENERGIES; PHOTOEMISSION; STABILITY; FRAMEWORK; ACID;

D O I：

10.1002/slct.202203011

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A new class of palladium nanoparticles encapsulated in an organic crystalline salt matrix Pd@F2 (A-2) was developed. Matrix A-2 was readily prepared by mixing an aqueous solution of the tetrasodium salt of tetraphenylmethane-tetrasulfonate and the PdCl4 salt of protonated tetrakis(4-aminophenyl)under hydrogen in water. Matrix A-2 contained 17-20 % of palladium and was not pyrophoric. The average size of the palladium metal particles was 7 nm. Matrix A-2 could be used as an efficient heterogeneous catalyst for the reduction of acetylene derivatives and had activity similar to that of Pd/C. The catalyst could be recovered and reused several times with just one four-hundredth of the palladium leaching after the first cycle. The reduction of diphenylacetylene could be selectively stopped at the cis-stilbene stage after one equivalent of hydrogen was absorbed. The same selective conversion could also be accomplished with terminal acetylenes. Matrix A-2 reduced aldehyde and epoxide groups very slowly which allowed the selective reduction of the acetylenes in the presence of aldehydes. This behavior contrasts with that of Pd/C which reduces both aldehyde and acetylene groups simultaneously. A model, suggesting the selective imbedding of the aldehyde groups in the organic F2 matrix of A-2, isolating them from the palladium active sites, explains the observed phenomena.

引用

页数：15