Core–shell structured Cu@m-SiO2 and Cu/ZnO@m-SiO2 catalysts for methanol synthesis from CO2 hydrogenation

Yang, Haiyan; Gao, Peng; Zhang, Chen; Zhong, Liangshu; Li, Xiaopeng; Wang, Sheng; Wang, Hui; Wei, Wei; Sun, Yuhan

doi:10.1016/j.catcom.2016.06.010

Cited by 87 publications

(54 citation statements)

References 33 publications

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“…[29] Ni/MGC CO 2 methanation Spatial confinement of ordered micro porous graphene-like carbon produces sub-7 nm well dispersed Ni within MGC [30] Ni/h-BN Syngas methanation Well-dispersed Ni encapsulated into few-layer h-BN shell, the confinement of h-BN shell improves its activity [31] Ni(x)@S16C CO 2 methanation À COOH in mesoporous SBA-15 (Si) endows effective Ni 2 + incorporation, leads to dispersed Ni confined into cage-type pores. It enriches surface sites, intensifies CO x adsorption [32] Ni@C CO 2 methanation Ni-MOF-derived Ni@C hollow porous hybrid, dispersed Ni confined in C shell, rich isolated active sites for high activity [33] Cu/Zn@m-SiO 2 CO 2 to CH 3 OH hydrogenation Confinement effect of meso-silica shell leads to 5 nm small Cu, higher activity [34] ing, and the confinement effect would be extensively used in fabricating new and highly efficient single-atom catalysts. That is to say, the confinement effect would play more and more important roles in creating highly-efficient heterogeneous catalysts.…”

Section: Catalystmentioning

confidence: 99%

Catalytic Conversion of Carbon Oxides in Confined Spaces: Status and Prospects

Zhao

2020

ChemCatChem

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Owing to the depletion of fossil reserves and the global warming by released greenhouse gas from the consumption of fossil resources, the catalytic conversion of carbon oxide (COx, including CO2 and CO) into fuels and high‐value chemicals has attracted tremendous interest in the field of catalysis. Developing high‐performance and practical catalysts with high activity, selectivity, and stability is of great importance but remains a huge challenge. A variety of new strategies were developed to take advantage of confinement effect to address the challenges that are relevant to the highly‐efficient transformation and utilization of COx by performing catalytic reactions in a confined space. The status on this issue can be divided into three aspects: improvement in catalytic activity, increase in catalytic selectivity and enhancement in catalytic stability. In this review, the progress in the field of promoted catalytic conversion of COx in confined spaces will be presented and discussed. Especially, the specific promoting mechanism in terms of the confinement effect for COx‐related transformations in confined spaces and the relationship between the impact of the confined space on the catalytic activity, selectivity, and stability regarding of COx conversions are highlighted. Finally, the future prospects on the opportunities and challenges of catalytic conversion of COx in confined spaces are outlined.

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Section: Catalystmentioning

confidence: 99%

Catalytic Conversion of Carbon Oxides in Confined Spaces: Status and Prospects

Zhao

2020

ChemCatChem

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“…Core–shell structured catalysts have also been developed for methanol synthesis due to their excellent thermal stability and electron transfer ability at the metal/oxide interface . SiO 2 possesses high thermal stability, high specific surface area, tunable pore size and ease of synthesis, and thus it can be used as an outer shell for core–shell catalysts . Yang et al studied the core–shell structured Cu/ZnO@SiO 2 catalyst for CO 2 hydrogenation to methanol.…”

Section: Introductionmentioning

confidence: 99%

“…SiO 2 possesses high thermal stability, high specific surface area, tunable pore size and ease of synthesis, and thus it can be used as an outer shell for core–shell catalysts . Yang et al studied the core–shell structured Cu/ZnO@SiO 2 catalyst for CO 2 hydrogenation to methanol. They found that the core–shell structure design endowed the inside‐trapped Cu and ZnO nanoparticles with excellent anti‐aggregation property during reduction and reaction, resulting in the excellent reaction stability.…”

Section: Introductionmentioning

confidence: 99%

A novel Core–Shell structured CuIn@SiO₂ catalyst for CO₂ hydrogenation to methanol

Shi

Tan

2018

AIChE Journal

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CO 2 hydrogenation is one of the most promising processes in response to energy crisis and greenhouse gas emission. There is, however, still a lack of a highly efficient and sustainable catalyst for this reaction. In this study, a novel low-cost coreshell structured CuIn@SiO 2 catalyst is prepared by a solvothermal method and used for catalyzing CO 2 hydrogenation to methanol. A significant interaction exists between Cu and In, promoting Cu dispersion and reducibility, Cu 2 In alloy and oxygen vacancy formation. Moreover, plenty of interfacial sites are formed between Cu 2 In and In 2 O 3 , which further enhances CO 2 adsorption and activation. CuIn@SiO 2 , therefore, shows not only a satisfactory catalytic stability due to core-shell formation but also an excellent catalytic performance. 9.8% CO 2 conversion, 78.1% CH 3 OH selectivity, and 13.7 mmol CH 3 OH Áh −1 Ág cat −1 CH 3 OH space-time yield are obtained at the space velocity of 20,000 mLÁg cat −1 Áh −1 . CuIn@SiO 2 possesses a great potential as catalyst for CO 2 hydrogenation in a moderate condition in industry.

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“…[69] The production of value-added organic acids by selective oxidationo fb iomass resourcesa ppears to be of great importance.T ransition metal simple oxides, such as CuO, have been studied for the selectivec onversion of glucose to lactic acid and acetic acid under hydrothermalc onditions. [71] Moreover,a cid-base catalysts have turnedo ut to be key players in the conversiono fg lucose,x ylose, and cellulose into lactic acid in water under subcritical conditions.T he treatment of toxic nitrogen-containing compounds stemming from the chemical and pharmaceutical industries is one of the major applications of catalytic wet air oxidation (CWAO) processes. [71] Moreover,a cid-base catalysts have turnedo ut to be key players in the conversiono fg lucose,x ylose, and cellulose into lactic acid in water under subcritical conditions.T he treatment of toxic nitrogen-containing compounds stemming from the chemical and pharmaceutical industries is one of the major applications of catalytic wet air oxidation (CWAO) processes.…”

Section: Sustainability Challenges For Oxidation Of Renewable Resourcesmentioning

confidence: 99%

“…[70] Lactic acid has been produced by conversion of av arietyo fc ellulosic biomass derivatives over mixed-metal oxides of the perovskite type. [71] Moreover,a cid-base catalysts have turnedo ut to be key players in the conversiono fg lucose,x ylose, and cellulose into lactic acid in water under subcritical conditions.T he treatment of toxic nitrogen-containing compounds stemming from the chemical and pharmaceutical industries is one of the major applications of catalytic wet air oxidation (CWAO) processes. Many studies have been performed on the oxidation of aniline,w hich is often chosen asm odel dye-industry pollutant.P articular attention has been paid to selectivity toward organic byproducts (especially azo, nitroso and nitro compounds, phenolic compounds and carboxylic acids) and inorganic forms of nitrogen (NH 4 + ,N O 2 À ,N O 3 À ).…”

Section: Sustainability Challenges For Oxidation Of Renewable Resourcesmentioning

confidence: 99%

Metal Oxides in Heterogeneous Oxidation Catalysis: State of the Art and Challenges for a More Sustainable World

2019

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This Review presents current knowledge, recent results, and challenges for the future in heterogeneous oxidation catalysis in liquid and gaseous phases on solid metal oxide catalysts. Metal oxides that are used as catalysts and their main structures and properties are summarized, as well as their catalytic properties in selective and total oxidation reactions, which were studied intensively, experimentally and theoretically, by Professor Jerzy Haber during his scientific life. Some emphasis is placed on the classical and unusual catalyst activation procedures for improving catalytic properties for better efficiency. For a more sustainable world, several examples are given of the oxidation of biomass derivatives to synthesize valuable chemicals and of other applications of metal oxides, such as depollution, photocatalysis, hydrogen production and fuel‐cell components. The importance of metal oxide catalysis in environmental and green chemistry and sustainability is discussed, and challenges for the future are considered.

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Core–shell structured Cu@m-SiO2 and Cu/ZnO@m-SiO2 catalysts for methanol synthesis from CO2 hydrogenation

Cited by 87 publications

References 33 publications

Catalytic Conversion of Carbon Oxides in Confined Spaces: Status and Prospects

Catalytic Conversion of Carbon Oxides in Confined Spaces: Status and Prospects

A novel Core–Shell structured CuIn@SiO₂ catalyst for CO₂ hydrogenation to methanol

Metal Oxides in Heterogeneous Oxidation Catalysis: State of the Art and Challenges for a More Sustainable World

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Core–shell structured Cu@m-SiO2 and Cu/ZnO@m-SiO2 catalysts for methanol synthesis from CO2 hydrogenation

Cited by 87 publications

References 33 publications

Catalytic Conversion of Carbon Oxides in Confined Spaces: Status and Prospects

Catalytic Conversion of Carbon Oxides in Confined Spaces: Status and Prospects

A novel Core–Shell structured CuIn@SiO2 catalyst for CO2 hydrogenation to methanol

Metal Oxides in Heterogeneous Oxidation Catalysis: State of the Art and Challenges for a More Sustainable World

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A novel Core–Shell structured CuIn@SiO₂ catalyst for CO₂ hydrogenation to methanol