Copolymerization of lactide, epoxides and carbon dioxide: a highly efficient heterogeneous ternary catalyst system

2021 ◽  
Vol 12 (11) ◽  
pp. 1700-1706
Author(s):  
Xiang Li ◽  
Ran-long Duan ◽  
Chen-yang Hu ◽  
Xuan Pang ◽  
Ming-xiao Deng
Keyword(s):  
Carbon Dioxide ◽  
Catalyst System ◽  
Polymer Chains ◽  
Polymer Chemistry ◽  
Highly Efficient ◽  
System P ◽  
Ternary Catalyst

The controlled copolymerization of mixed monomers that usually imparts distinct advantages into single polymer chains and requires a single versatile catalyst remains a key challenge in polymer chemistry.

One-pot copolymerization of epoxides/carbon dioxide and lactide using a ternary catalyst system

2018 ◽  
Vol 8 (24) ◽  
pp. 6452-6457 ◽  
Author(s):  
Xiang Li ◽  
Chenyang Hu ◽  
Xuan Pang ◽  
Ranlong Duan ◽  
Xuesi Chen
Keyword(s):  
Carbon Dioxide ◽  
Catalytic System ◽  
Chain Transfer ◽  
Catalyst System ◽  
Transfer Mechanism ◽  
One Pot ◽  
Multiblock Copolymer ◽  
System P ◽  
Ternary Catalyst

A PLA/PPC multiblock copolymer was prepared using a novel ternary catalytic system that proceeds via an intermolecular chain transfer mechanism.

Rhenium-modified porous covalent triazine framework for highly efficient photocatalytic carbon dioxide reduction in a solid–gas system

2018 ◽  
Vol 8 (8) ◽  
pp. 2224-2230 ◽  
Author(s):  
Rui Xu ◽  
Xu-Sheng Wang ◽  
Hui Zhao ◽  
Hua Lin ◽  
Yuan-Biao Huang ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
High Efficiency ◽  
Carbon Dioxide Reduction ◽  
Highly Efficient ◽  
System P ◽  
Gas System ◽  
Covalent Triazine Framework

A porous rhenium-modified covalent triazine framework shows high efficiency in photocatalytic CO2 reduction to CO in a solid/gas interface.

Ambient chemical fixation of CO2 using a highly efficient heterometallic helicate catalyst system

2018 ◽  
Vol 54 (18) ◽  
pp. 2212-2215 ◽  
Author(s):  
Li Wang ◽  
Cong Xu ◽  
Qingxin Han ◽  
Xiaoliang Tang ◽  
Panpan Zhou ◽  
...  
Keyword(s):  
Catalyst System ◽  
Chemical Fixation ◽  
Highly Efficient ◽  
System P

Two novel heptanuclear 3d–4f helicates have been synthesized and characterized.

scholarly journals Highly efficient conversion of CO2 to cyclic carbonates with a binary catalyst system in a microreactor: intensification of “electrophile–nucleophile” synergistic effect

RSC Advances ◽  
2018 ◽  
Vol 8 (68) ◽  
pp. 39182-39186 ◽  
Author(s):  
Ming-Ran Li ◽  
Ming-Chao Zhang ◽  
Tian-Jun Yue ◽  
Xiao-Bing Lu ◽  
Wei-Min Ren
Keyword(s):  
Synergistic Effect ◽  
Ammonium Salt ◽  
Coupling Reaction ◽  
Catalyst System ◽  
Cyclic Carbonates ◽  
Efficient Conversion ◽  
Highly Efficient ◽  
System P ◽  
Binary Catalyst

An intensification of the “electrophile–nucleophile” synergistic effect was achieved in a microreactor for the coupling reaction of CO2 and epoxides mediated by the binary Al complex/ternary ammonium salt catalyst system.

Highly efficient synthesis of diethyl carbonate via one-pot reaction from carbon dioxide, epoxides and ethanol over KI-based binary catalyst system

2014 ◽  
Vol 471 ◽  
pp. 19-27 ◽  
Author(s):  
Liguo Wang ◽  
Huiquan Li ◽  
Shumin Xin ◽  
Peng He ◽  
Yan Cao ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Catalyst System ◽  
Diethyl Carbonate ◽  
Efficient Synthesis ◽  
One Pot ◽  
Highly Efficient ◽  
Binary Catalyst

scholarly journals Highly Efficient MOF Catalyst Systems for CO2 Conversion to Bis-Cyclic Carbonates as Building Blocks for NIPHUs (Non-Isocyanate Polyhydroxyurethanes) Synthesis

Catalysts ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 628
Author(s):  
Adolfo Benedito ◽  
Eider Acarreta ◽  
Enrique Giménez
Keyword(s):  
Molar Mass ◽  
Cycloaddition Reaction ◽  
Building Blocks ◽  
Catalyst System ◽  
Cyclic Carbonate ◽  
Ammonium Bromide ◽  
Cyclic Carbonates ◽  
High Molar Mass ◽  
Highly Efficient ◽  
Free Process

The present paper describes a greener sustainable route toward the synthesis of NIPHUs. We report a highly efficient solvent-free process to produce [4,4′-bi(1,3-dioxolane)]-2,2′-dione (BDC), involving CO2, as renewable feedstock, and bis-epoxide (1,3-butadiendiepoxide) using only metal–organic frameworks (MOFs) as catalysts and cetyltrimethyl-ammonium bromide (CTAB) as a co-catalyst. This synthetic procedure is evaluated in the context of reducing global emissions of waste CO2 and converting CO2 into useful chemical feedstocks. The reaction was carried out in a pressurized reactor at pressures of 30 bars and controlled temperatures of around 120–130 °C. This study examines how reaction parameters such as catalyst used, temperature, or reaction time can influence the molar mass, yield, or reactivity of BDC. High BDC reactivity is essential for producing high molar mass linear non-isocyanate polyhydroxyurethane (NIPHU) via melt-phase polyaddition with aliphatic diamines. The optimized Al-OH-fumarate catalyst system described in this paper exhibited a 78% GC-MS conversion for the desired cyclic carbonates, in the absence of a solvent and a 50 wt % chemically fixed CO2. The cycloaddition reaction could also be carried out in the absence of CTAB, although lower cyclic carbonate yields were observed.

Single layered hollow NiO–NiS catalyst with large specific surface area and highly efficient visible-light-driven carbon dioxide conversion

Chemosphere ◽  
2021 ◽  
pp. 130759
Author(s):  
Byung Hyun Park ◽  
Minkyu Kim ◽  
No-Kuk Park ◽  
Ho-Jung Ryu ◽  
Jeom‐In Baek ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Visible Light ◽  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Large Specific Surface Area ◽  
Carbon Dioxide Conversion ◽  
Highly Efficient ◽  
Visible Light Driven

Unprecedentedly high efficiency for photocatalytic conversion of methane to methanol over Au–Pd/TiO2 – what is the role of each component in the system?

2021 ◽  
Author(s):  
Xiaojiao Cai ◽  
Siyuan Fang ◽  
Yun Hang Hu
Keyword(s):  
Methane Conversion ◽  
High Efficiency ◽  
Mild Conditions ◽  
Highly Efficient ◽  
System P ◽  
Conversion Of Methane

Direct and highly efficient methane conversion to methanol under mild conditions is achieved via photocatalysis over Au–Pd/TiO2.

Effect of pressure on synthetic diamond crystals at high temperatures and pressures in Fe/Ni catalyst system

CrystEngComm ◽  
2021 ◽  
Author(s):  
Shuai Fang ◽  
Yongkui Wang ◽  
Liangchao Chen ◽  
Zhiyun Lu ◽  
Zhenghao Cai ◽  
...  
Keyword(s):  
Nitrogen Content ◽  
Growth Mechanism ◽  
Synthetic Diamond ◽  
Natural Diamond ◽  
Catalyst System ◽  
Necessary Condition ◽  
Ni Catalyst ◽  
Effect Of Pressure ◽  
Diamond Crystals ◽  
System P

Pressure is a necessary condition for the growth of natural diamond. Studying the effect of pressure on the nitrogen content of diamond is important for exploring the growth mechanism of...

Sign in / Sign up

Export Citation Format

Share Document