Cyclic (alkyl)(amino)carbene-copper supported on SBA-15 as an efficient and recyclable catalyst for CO2 hydrogenation to formate

Zhou, Lei; Peng, Lingling; Ji, Jialan; Ma, Wenzhong; Hu, Jinling; Wu, Youting; Geng, Jiao; Hu, Xingbang

doi:10.1016/j.jcou.2022.101910

Cited by 8 publications

(3 citation statements)

References 89 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The maximum TON of 2450 was achieved at a BTMG/Cu ratio of 30 000 (entry 5). The obtained catalytic activities were improved even at a relatively low temperature compared to those of previously reported heterogeneous abundant metal systems. − In association with the effective molecular design of homogeneous Cu catalysts for CO 2 hydrogenation into formate salts by our group , and others, ,,− the catalytic system in this study incorporated Cu(I) alkoxides as key species in H 2 activation, exhibiting advantages in catalyst activity and reusability.…”

Section: Resultsmentioning

confidence: 80%

Alkoxide-Decorated Copper Nanoparticles on Amidine-Modified Polymers as Hydrogenation Catalysts for Enabling H₂ Heterolysis

et al. 2023

View full text Add to dashboard Cite

Direct formation of Cu nanoparticles was accomplished on an amidine- and guanidine-functionalized polymer (polystyrene-bound 1,8-diazabicyclo[5.4.0]undec-7-ene (PS-DBU) and 1,5,7-triazabicyclo[4.4.0]dec-5-ene (PS-TBD), respectively) by thermal treatment of Cu(acac)2 (acac = acetylacetonato) in methanol under pressurized H2. The immobilized structure was characterized by inductively coupled plasma atomic emission spectroscopy (ICP-AES), elemental analysis, and microscopic analysis. X-ray photoelectron spectroscopy (XPS) data indicated that the nanoparticles consisted of Cu(0) and oxygenated Cu(I). The Cu(0)/Cu(I) ratio was determined by X-ray absorption spectroscopy. In particular, X-ray absorption near-edge structure (XANES) and extended X-ray absorption fine structure (EXAFS) studies indicated the inclusion of alkoxides bound to Cu nanoparticles. Further 13C-labeled experiments allowed us to identify the Cu methoxide species by solid-state 13C nuclear magnetic resonance (NMR). A series of alkoxide-incorporated Cu nanoparticles were proven to facilitate H2 heterolysis and were applied in the catalytic hydrogenation of CO2 to formate salts in the presence of a nitrogen base. The catalytic activity increased with decreased mean particle size and increased Cu(I) content, indicating that the Cu(I) alkoxide species played an indispensable role in hydrogenation. The combination of Cu/PS-DBU and 2-tert-butyl-1,1,3,3-tetramethylguanidine (BTMG) achieved a maximum turnover number of 2450 at 100 °C without leaching or aggregation of the nanosized catalysts.

show abstract

Section: Resultsmentioning

confidence: 80%

Alkoxide-Decorated Copper Nanoparticles on Amidine-Modified Polymers as Hydrogenation Catalysts for Enabling H₂ Heterolysis

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Considering that CuH is regarded as a key intermediate in the hydrosilylation reaction, , we attempted to isolate the CuH monomer via the replacement reaction between (CAAC)CuCl and hydrosilanes. Unfortunately, our efforts have failed so far because the CuH intermediate is highly unstable .…”

Section: Resultsmentioning

confidence: 99%

CuH-Catalyzed Selective N-Methylation of Amines Using Paraformaldehyde as a C1 Source

Wang,

Lang,

Wang

et al. 2023

ACS Omega

View full text Add to dashboard Cite

Copper hydride (CuH) complexes have been proposed as key intermediates in synthesis and catalysis. Herein, we developed a highly efficient strategy for CuH-catalyzed N-methylation of aromatic and aliphatic amines using paraformaldehyde and polymethylhydrosiloxane (PMHS) under mild reaction conditions. The reaction proceeded smoothly without additives to furnish the corresponding N-methylated products using cyclic(alkyl)(amino)carbene (CAAC)CuH as a reaction intermediate, which results from a reaction between PMHS and (CAAC)CuCl.

show abstract

“…SBA-15 is a catalyst carrier with applications in catalysis, separation, biology, and nanomaterials. 21–30 SBA-15 possesses highly ordered mesoporous structure, high specific surface area, adjustable pore size, high thermal and hydrothermal stability. 31,32 Therefore, the introduction of SBA-15 mesopores will help to improve the stability of the catalysts.…”

Section: Introductionmentioning

confidence: 99%

High-efficiency catalyst CuSO₄/SBA-15 toward butylated hydroxytoluene synthesis in a heterogeneous system

Wang

Bao

et al. 2023

RSC Adv.

View full text Add to dashboard Cite

show abstract

Cyclic (alkyl)(amino)carbene-copper supported on SBA-15 as an efficient and recyclable catalyst for CO2 hydrogenation to formate

Cited by 8 publications

References 89 publications

Alkoxide-Decorated Copper Nanoparticles on Amidine-Modified Polymers as Hydrogenation Catalysts for Enabling H₂ Heterolysis

Alkoxide-Decorated Copper Nanoparticles on Amidine-Modified Polymers as Hydrogenation Catalysts for Enabling H₂ Heterolysis

CuH-Catalyzed Selective N-Methylation of Amines Using Paraformaldehyde as a C1 Source

High-efficiency catalyst CuSO₄/SBA-15 toward butylated hydroxytoluene synthesis in a heterogeneous system

Contact Info

Product

Resources

About

Cyclic (alkyl)(amino)carbene-copper supported on SBA-15 as an efficient and recyclable catalyst for CO2 hydrogenation to formate

Cited by 8 publications

References 89 publications

Alkoxide-Decorated Copper Nanoparticles on Amidine-Modified Polymers as Hydrogenation Catalysts for Enabling H2 Heterolysis

Alkoxide-Decorated Copper Nanoparticles on Amidine-Modified Polymers as Hydrogenation Catalysts for Enabling H2 Heterolysis

CuH-Catalyzed Selective N-Methylation of Amines Using Paraformaldehyde as a C1 Source

High-efficiency catalyst CuSO4/SBA-15 toward butylated hydroxytoluene synthesis in a heterogeneous system

Contact Info

Product

Resources

About

Alkoxide-Decorated Copper Nanoparticles on Amidine-Modified Polymers as Hydrogenation Catalysts for Enabling H₂ Heterolysis

Alkoxide-Decorated Copper Nanoparticles on Amidine-Modified Polymers as Hydrogenation Catalysts for Enabling H₂ Heterolysis

High-efficiency catalyst CuSO₄/SBA-15 toward butylated hydroxytoluene synthesis in a heterogeneous system