scholarly journals Novel Heterogeneous Catalysts for CO2 Hydrogenation to Liquid Fuels

2020 ◽  
Vol 6 (10) ◽  
pp. 1657-1670 ◽  
Author(s):  
Peng Gao ◽  
Lina Zhang ◽  
Shenggang Li ◽  
Zixuan Zhou ◽  
Yuhan Sun
Keyword(s):  
Heterogeneous Catalysts ◽  
Co2 Hydrogenation ◽  
Liquid Fuels

scholarly journals Production of Fuels and Chemicals from a CO2/H2 Mixture

Reactions ◽  
2020 ◽  
Vol 1 (2) ◽  
pp. 130-146
Author(s):  
Yali Yao ◽  
Baraka Celestin Sempuga ◽  
Xinying Liu ◽  
Diane Hildebrandt
Keyword(s):  
Co2 Hydrogenation ◽  
Water Gas Shift ◽  
Liquid Fuels ◽  
Saturated Hydrocarbons ◽  
Reverse Water Gas Shift ◽  
Cu Catalyst ◽  
In Series ◽  
Fuels And Chemicals ◽  
Water Gas ◽  
Aspen Simulation

In order to explore co-production alternatives, a once-through process for CO2 hydrogenation to chemicals and liquid fuels was investigated experimentally. In this approach, two different catalysts were considered; the first was a Cu-based catalyst that hydrogenates CO2 to methanol and CO and the second a Fisher–Tropsch (FT) Co-based catalyst. The two catalysts were loaded into different reactors and were initially operated separately. The experimental results show that: (1) the Cu catalyst was very active in both the methanol synthesis and reverse-water gas shift (R-WGS) reactions and these two reactions were restricted by thermodynamic equilibrium; this was also supported by an Aspen plus simulation of an (equilibrium) Gibbs reactor. The Aspen simulation results also indicated that the reactor can be operated adiabatically under certain conditions, given that the methanol reaction is exothermic and R-WGS is endothermic. (2) the FT catalyst produced mainly CH4 and short chain saturated hydrocarbons when the feed was CO2/H2. When the two reactors were coupled in series and the presence of CO in the tail gas from the first reactor (loaded with Cu catalyst) significantly improves the FT product selectivity toward higher carbon hydrocarbons in the second reactor compared to the standalone FT reactor with only CO2/H2 in the feed.

scholarly journals A short review of recent advances in CO2 hydrogenation to hydrocarbons over heterogeneous catalysts

RSC Advances ◽  
2018 ◽  
Vol 8 (14) ◽  
pp. 7651-7669 ◽  
Author(s):  
Wenhui Li ◽  
Haozhi Wang ◽  
Xiao Jiang ◽  
Jie Zhu ◽  
Zhongmin Liu ◽  
...  
Keyword(s):  
Heterogeneous Catalysts ◽  
Short Review ◽  
Co2 Hydrogenation ◽  
Recent Advances

CO2 hydrogenation to hydrocarbons over heterogeneous catalysts.

scholarly journals Catalytic Transformation of Renewables (Olefin, Bio-Sourced, et al.)

Catalysts ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 364
Author(s):  
Nikolaos Dimitratos ◽  
Stefania Albonetti ◽  
Tommaso Tabanelli
Keyword(s):  
Heterogeneous Catalysts ◽  
Biomass Conversion ◽  
Liquid Fuels ◽  
Fine Chemicals ◽  
Mixed Metal Oxides ◽  
Catalytic Transformation ◽  
Special Issue ◽  
Platform Chemicals ◽  
Supported Metal Nanoparticles ◽  
Biomass Transformation

The objective of this Special Issue is to provide new diverse contributions that can demonstrate recent applications in biomass transformation using heterogeneous catalysts. In recent decades, a wide variety of biomass-derived chemicals have emerged as key platform chemicals for the production of fine chemicals and liquid fuels using heterogeneous catalysts as the preferred option for most of the developed and proposed catalytic processes. A range of heterogeneous catalysts have been evaluated for effective biomass conversion, such as supported metal nanoparticles, mixed metal oxides and zeolites, where the control of particle size, porosity [...]

Ru nanoparticle functionalized silica nanotubes as a catalyst for CO2 hydrogenation reaction

2021 ◽  
Vol 18 ◽  
Author(s):  
Vivek Srivastava
Keyword(s):  
Active Sites ◽  
Heterogeneous Catalysts ◽  
Chemical Properties ◽  
Hydrogenation Reaction ◽  
Active Species ◽  
Co2 Hydrogenation ◽  
Functionalized Silica ◽  
Tem Analysis ◽  
Silica Nanotubes ◽  
Ru Catalyst

: The catalytic display of supported heterogeneous catalysts is essentially reliant on their constitutive elements including active species and supports. Accordingly, the scheme and development of active catalysts with synergistically enhanced outcomes between active sites and supports are of high importance. A simple NaBH4 reduction method was used to synthesize cylindrical amine-functionalized silica nanotubes supported Ru catalyst (ASNT@Ru catalyst) including amine functionality. The physicochemical properties of the material were analyzed by various analytical methods such as SEM-TEM analysis, N2 physisorption, ICP-OES, XPS, etc, and all the data were found in good agreement with each other. Amine-free SNT support using the calcination process was also synthesized to examine the effect of amine in ASNT support on the uniform Ru dispersion. Taking the advantages of the fundamental physical and chemical properties of ASNT support and well-distributed Ru NPs, the ASNT@Ru catalyst was utilized for CO2 hydrogenation reaction and gave excellent catalytic activity/ stability in terms of a good quantity of the formic. 5 times catalysts recycling were recorded, and formic acid was obtained in good quantity.

scholarly journals Heterogeneous catalysts for CO2 hydrogenation to formic acid/formate: from nanoscale to single atom

2021 ◽  
Author(s):  
Ruiyan Sun ◽  
Yuhe Liao ◽  
Shao-Tao Bai ◽  
Mingyuan Zheng ◽  
Cheng Zhou ◽  
...  
Keyword(s):  
Formic Acid ◽  
Heterogeneous Catalysts ◽  
Co2 Hydrogenation ◽  
Single Atom ◽  
Structure Activity

This review provides an overview of advances on constructing heterogeneous nanostructured and single atom catalysts for CO2 hydrogenation to formic acid/formate. The main focus is placed on structure–activity correlations and mechanistic insights.

scholarly journals Modifications in the Composition of CuO/ZnO/Al2O3 Catalyst for the Synthesis of Methanol by CO2 Hydrogenation

Catalysts ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 774
Author(s):  
Bianca Trifan ◽  
Javier Lasobras ◽  
Jaime Soler ◽  
Javier Herguido ◽  
Miguel Menéndez
Keyword(s):  
High Pressure ◽  
Heterogeneous Catalysts ◽  
High Selectivity ◽  
Co2 Hydrogenation ◽  
Efficient Catalyst ◽  
Synthesis Time ◽  
Mild Conditions ◽  
Temperature And Pressure ◽  
Synthesis Of Methanol ◽  
Al2o3 Catalyst

Renewable methanol, obtained from CO2 and hydrogen provided from renewable energy, was proposed to close the CO2 loop. In industry, methanol synthesis using the catalyst CuO/ZnO/Al2O3 occurs at a high pressure. We intend to make certain modification on the traditional catalyst to work at lower pressure, maintaining high selectivity. Therefore, three heterogeneous catalysts were synthesized by coprecipitation to improve the activity and the selectivity to methanol under mild conditions of temperature and pressure. Certain modifications on the traditional catalyst Cu/Zn/Al2O3 were employed such as the modification of the synthesis time and the addition of Pd as a dopant agent. The most efficient catalyst among those tested was a palladium-doped catalyst, 5% Pd/Cu/Zn/Al2O3. This had a selectivity of 64% at 210 °C and 5 bar.

scholarly journals Catalytic Thermochemical Conversion of Algae and Upgrading of Algal Oil for the Production of High-Grade Liquid Fuel: A Review

Catalysts ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 145 ◽  
Author(s):  
Yingdong Zhou ◽  
Changwei Hu
Keyword(s):  
Liquid Fuel ◽  
Heterogeneous Catalysts ◽  
Catalytic Conversion ◽  
Liquid Fuels ◽  
Thermochemical Conversion ◽  
Fuel Quality ◽  
High Grade ◽  
Catalytic Systems ◽  
Renewable Biomass ◽  
Algae Oil

The depletion of fossil fuel has drawn growing attention towards the utilization of renewable biomass for sustainable energy production. Technologies for the production of algae derived biofuel has attracted wide attention in recent years. Direct thermochemical conversion of algae obtained biocrude oil with poor fuel quality due to the complex composition of algae. Thus, catalysts are required in such process to remove the heteroatoms such as oxygen, nitrogen, and sulfur. This article reviews the recent advances in catalytic systems for the direct catalytic conversion of algae, as well as catalytic upgrading of algae-derived oil or biocrude into liquid fuels with high quality. Heterogeneous catalysts with high activity in deoxygenation and denitrogenation are preferable for the conversion of algae oil to high-grade liquid fuel. The paper summarized the influence of reaction parameters and reaction routes for the catalytic conversion process of algae from critical literature. The development of new catalysts, conversion conditions, and efficiency indicators (yields and selectivity) from different literature are presented and compared. The future prospect and challenges in general utilization of algae are also proposed.

scholarly journals A Review of Microwave Assisted Liquefaction of Ligninin Hydrogen Donor Solvents: Effect of Solvents and Catalysts

Energies ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 2877 ◽  
Author(s):  
Minghao Zhou ◽  
Junming Xu ◽  
Jianchun Jiang ◽  
Brajendra Sharma
Keyword(s):  
Large Scale ◽  
Heterogeneous Catalysts ◽  
Value Added ◽  
Hydrogen Donor ◽  
Liquid Fuels ◽  
High Catalytic Activity ◽  
Scale Production ◽  
Microwave Assisted ◽  
Donor Solvent ◽  
Liquefaction Process

Lignin, a renewable source of aromatic chemicals in nature, has attracted increasing attention due to its structure and application prospect. Catalytic solvolysis has developed as a promising method for the production of value-added products from lignin. The liquefaction process is closely associated with heating methods, catalysts and solvents. Microwave assisted lignin liquefaction in hydrogen donor solvent with the presence of catalysts has been confirmed to be effective to promote the production of liquid fuels or fine chemicals. A great number of researchers should be greatly appreciated on account of their contributions on the progress of microwave technology in lignin liquefaction. In this study, microwave assisted liquefaction of lignin in a hydrogen donor solvent is extensively overviewed, concerning the effect of different solvents and catalysts. This review concludes that microwave assisted liquefaction is a promising technology for the valorization of lignin, which could reduce the reaction time, decrease the reaction temperature, and finally fulfill the utilization of lignin in a relatively mild condition. In the future, heterogeneous catalysts with high catalytic activity and stability need to be prepared to achieve the need for large-scale production of high-quality fuels and value-added chemicals from lignin.

scholarly journals CO2 hydrogenation over heterogeneous catalysts at atmospheric pressure: from electronic properties to product selectivity

2021 ◽  
Author(s):  
Yaning Wang ◽  
Lea R. Winter ◽  
Jingguang G. Chen ◽  
Binhang Yan
Keyword(s):  
Electronic Properties ◽  
Atmospheric Pressure ◽  
Heterogeneous Catalysts ◽  
Co2 Hydrogenation ◽  
Product Selectivity ◽  
Hydrogenation Selectivity

The fundamental insights into the relationships among the electronic properties of active metals, the binding strengths of key intermediates, and the CO2 hydrogenation selectivity are provided.

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