Self-assembly of metal–organosilicate on porous silica substrates for efficient CO<sub>2</sub>hydrogenation to methanol

Shao, Yu; Zeng, Hua Chun

doi:10.1039/d2ta08830d

Cited by 6 publications

(1 citation statement)

References 51 publications

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“…47,49 Material characterization of the commercial catalyst had been performed previously by our research group as well as others. 50,51 From these studies, it is known that the morphology of the commercial catalysts resembles unstructured NPs in clumps, with a BET surface area of 91.3 m 2 •g −1 and a copper content of 51 wt %.…”

Section: Preparation and Structural Characterizationmentioning

confidence: 99%

Three-Dimensional Assemblages of Metal Silicate for Catalytic CO₂ Conversion to Methanol and Adsorptive Pollutant Removal

Sun

Lim

Zeng

2023

ACS Sustainable Chem. Eng.

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Morphological transformation was performed on Stober silica nanospheres (ca. 270 nm in diameter) and transmuted into either ZnSiO (zinc silicate) nanoflowers or MgSiO (magnesium silicate) nanoflowers (600−800 nm in diameter) through a facile hydrothermal process. The zinc silicate materials were then chosen for incipient wetness impregnation to imbue them with different levels of Cu and Zn doping due to the well-established elemental synergy of Cu and Zn toward methanol synthesis via CO 2 hydrogenation. Characterization results concur that zinc silicate nanoflowers loaded with copper(II) oxide were formed after incipient wetness impregnation. Three as-synthesized catalyst candidates with different copper loadings were then evaluated for CO 2 hydrogenation and compared against an industrial catalyst. After the reaction, highresolution transmission electron microscopy (HRTEM) with energy-dispersive X-ray (EDX) elemental mapping reveal that petite Cu nanoparticles formed on the petals of the impregnated zinc silicate nanoflowers. Experimental results show that all catalyst materials have an exceptional high methanol selectivity, with overall performance exceeding that of the industrial catalyst at per Cu basis. Both ZnSiO and MgSiO were also evaluated through a simple methylene blue adsorption test. Hence, through deliberate morphological control and chemical transformation, superficially inert Stober silica nanospheres were functionalized into transitionand earth-alkaline metal silicates, which exhibit catalytic and adsorptive properties with a nanoflower morphology that prevents interstacking of nanosheets.

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Section: Preparation and Structural Characterizationmentioning

confidence: 99%

Three-Dimensional Assemblages of Metal Silicate for Catalytic CO₂ Conversion to Methanol and Adsorptive Pollutant Removal

Sun

Lim

Zeng

2023

ACS Sustainable Chem. Eng.

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Nano‐alloy Catalysts for Methanol Synthesis from CO₂ Hydrogenation

Zhang,

Lian,

Sun

et al. 2024

Chemistry An Asian Journal

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Nano‐alloy catalysts (NACs), which differ appreciably from monometallic catalysts, take on superior intrinsic features in surface microstructure, surface electronic properties, homogeneity in nanoscale, etc., endowing them with attractive prospects in heterogeneous catalysis. In particular, methanol synthesis from CO2 exhibits high potentials in terms of alternative energy sources to fossil fuels and NACs have shown promising performance in promoting the reaction. However, there still lacks of the bottom‐up catalysts design as well as the unanimous insight regarding the mechanistic understanding. Herein, we present a comprehensive overview of the physico‐chemical properties and the fabrication approach to NACs with high catalytic performance in the CO2 hydrogenation to methanol. Additionally, the progresses of NACs were comprehensively summarized in terms of mechanisms. Finally, some thinking about the further relevant studies on NACs is outlooked with the aim to provide new insights for achieving the precise design and controllable properties of NACs.

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CuO–ZnO catalyst decorated on porous CeO2-based nanosheets in-situ grown on cordierite for methanol steam reforming

Guo

et al. 2023

Ceramics International

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Self-assembly of metal–organosilicate on porous silica substrates for efficient CO₂hydrogenation to methanol

Abstract: CuZn-based nanocatalysts for the application of MeOH synthesis from hydrogenation of CO2 have been well-studied in the past few decades. However, many research endeavours focused on individual aspects of the...

Cited by 6 publications

References 51 publications

Three-Dimensional Assemblages of Metal Silicate for Catalytic CO₂ Conversion to Methanol and Adsorptive Pollutant Removal

Three-Dimensional Assemblages of Metal Silicate for Catalytic CO₂ Conversion to Methanol and Adsorptive Pollutant Removal

Nano‐alloy Catalysts for Methanol Synthesis from CO₂ Hydrogenation

CuO–ZnO catalyst decorated on porous CeO2-based nanosheets in-situ grown on cordierite for methanol steam reforming

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Self-assembly of metal–organosilicate on porous silica substrates for efficient CO2hydrogenation to methanol

Abstract: CuZn-based nanocatalysts for the application of MeOH synthesis from hydrogenation of CO2 have been well-studied in the past few decades. However, many research endeavours focused on individual aspects of the...

Cited by 6 publications

References 51 publications

Three-Dimensional Assemblages of Metal Silicate for Catalytic CO2 Conversion to Methanol and Adsorptive Pollutant Removal

Three-Dimensional Assemblages of Metal Silicate for Catalytic CO2 Conversion to Methanol and Adsorptive Pollutant Removal

Nano‐alloy Catalysts for Methanol Synthesis from CO2 Hydrogenation

CuO–ZnO catalyst decorated on porous CeO2-based nanosheets in-situ grown on cordierite for methanol steam reforming

Contact Info

Product

Resources

About

Self-assembly of metal–organosilicate on porous silica substrates for efficient CO₂hydrogenation to methanol

Three-Dimensional Assemblages of Metal Silicate for Catalytic CO₂ Conversion to Methanol and Adsorptive Pollutant Removal

Three-Dimensional Assemblages of Metal Silicate for Catalytic CO₂ Conversion to Methanol and Adsorptive Pollutant Removal

Nano‐alloy Catalysts for Methanol Synthesis from CO₂ Hydrogenation