Influence of the Preparation Method on Hybrid Catalysts CuO–ZnO–Al2O3 and H-Ferrierite for Syngas Transformation to Hydrocarbons via Methanol

Flores, Jhonny Huertas; Silva, Maria Isabel Pais da

doi:10.1007/s10562-016-1771-0

Cited by 6 publications

(8 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For example, a combination of the commercial low temperature methanol synthesis catalyst with SAPO-34 enables direct production of saturated C 2 –C 4 hydrocarbons as reported by Chojecki et al and Nieskens et al While SAPO-34 was reported as a component of hybrid catalyst targeting C 2 –C 4 hydrocarbons, − BETA or USY zeolites favor formation of C 2 –C 3 products. Gasoline range product formation was reported when ZSM-5 , or Ferrierite was used.…”

Section: Introductionmentioning

confidence: 99%

Conversion of Synthesis Gas to Light Olefins: Impact of Hydrogenation Activity of Methanol Synthesis Catalyst on the Hybrid Process Selectivity over Cr–Zn and Cu–Zn with SAPO-34

Кирилин

DeWilde

Santos

et al. 2017

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

Direct conversion of syngas to hydrocarbons occurs over hybrid catalyst mixtures containing methanol synthesis and microporous acid components. In particular, both copper and zinc oxide-based as well as chromium-and zinc-based catalysts are active for methanol synthesis and can be used in the hybrid catalyst process. The choice of methanol synthesis catalyst alters product selectivity and distribution. In particular, reaction products of the Cu−Zn/SAPO-34 system include only saturated hydrocarbons, while the Cr−Zn/SAPO-34 catalyst enables light olefin production directly from syngas. Hydrogenation properties of the methanol synthesis catalyst influence the C 3 /C 2 yield ratios in the hydrocarbon products. We analyze the observed differences of selectivity with respect to olefin hydrogenation activities of the methanol synthesis components and their interaction with SAPO-34 for methanol-to-olefins conversion. A simplified kinetic model for the hybrid system is proposed to describe the observed selectivity patterns.

show abstract

Section: Introductionmentioning

confidence: 99%

Conversion of Synthesis Gas to Light Olefins: Impact of Hydrogenation Activity of Methanol Synthesis Catalyst on the Hybrid Process Selectivity over Cr–Zn and Cu–Zn with SAPO-34

Кирилин

DeWilde

Santos

et al. 2017

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

show abstract

“…Liquid hydrocarbons in the gasoline range can be made using ZSM-5 22−34 or Ferrierite. 35,36 A similar, yet distinctly different process concept is the approach where the syntheses of methanol, dimethyl ether (DME), and gasoline are integrated into one synthesis loop with the individual reactions still taking place in two separate reactors. 37,38 The methanol synthesis component of the hybrid catalyst is typically a conventional copper−zinc methanol synthesis catalyst.…”

Section: Introductionmentioning

confidence: 99%

“…C2–C4 hydrocarbons are typically targeted using SAPO-34 as the molecular sieve component within the hybrid catalyst mix. − C3–C4 hydrocarbons (LPG) are favored using BETA − or USY , type frameworks. Liquid hydrocarbons in the gasoline range can be made using ZSM-5 − or Ferrierite. , A similar, yet distinctly different process concept is the approach where the syntheses of methanol, dimethyl ether (DME), and gasoline are integrated into one synthesis loop with the individual reactions still taking place in two separate reactors. , …”

Section: Introductionmentioning

confidence: 99%

Production of Light Hydrocarbons from Syngas Using a Hybrid Catalyst

Nieskens

Çiftçi

Groenendijk

et al. 2017

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

A hybrid catalyst consisting of a Cu-ZnO/Al2O3 methanol synthesis catalyst and a SAPO-34 molecular sieve was shown to convert syngas into a narrow mixture of short chain paraffins centered at C2–C3 with little methane and C5+ made. This product mix is expected to be an excellent cracker feedstock for the production of olefins. The hybrid catalyst system closely couples sequential reactions on each of the two independent catalysts. The function of each of the components was unraveled by performing experiments in which the reactor was loaded with discrete layers of the individual catalysts. Methanol (MeOH) synthesis over Cu-ZnO/Al2O3 is followed by methanol conversion to dimethyl ether (DME) + steam over the acidic SAPO-34 or Cu-ZnO/Al2O3 component. Simultaneously, the so generated water feeds into the water gas shift (WGS) reaction over Cu-ZnO/Al2O3, producing H2 + CO2, and the DME/MeOH undergoes methanol to olefins (MTO) conversion over SAPO-34. The olefins are subsequently hydrogenated to paraffins over the Cu-ZnO/Al2O3 and SAPO-34 catalysts using hydrogen from the feed or hydrogen produced in the WGS reaction. Comparison of fully mixed vs layered catalyst bed systems indicated that a mixed catalyst bed is preferred to give a high CO conversion and selectivity to desired paraffin products. This scheme enables high single stage conversion by consuming methanol, thereby removing the thermodynamic constraint on that reaction step. The interactions between all the reactants and catalysts in this system create a complex relationship that is probed in this paper.

show abstract

“…Apart from increasing the possibility of industrial application, flexibly controlling the formation of a particular product with high selectivity is another future direction. By using some zeolites with special structures or modifying zeolites, the intermediates or products would be selectively produced, as reported by Jiao et al [99] and Flores et al [100]. Consequently, looking for deep insights into the fundamental reaction mechanism and the relationship between zeolite acidity and product selectivity is quite significant for the further development of research and industry.…”

Section: Conclusion and Future Research Directionsmentioning

confidence: 99%

Direct conversion of syngas to aromatics: A review of recent studies

Yang

Chen

et al. 2020

Chinese Journal of Catalysis

View full text Add to dashboard Cite

The direct catalytic conversion of syngas to aromatics offers a promising route to manufacture fine chemicals by employing non-petroleum carbon resources, because aromatic constituents are the key platform for producing polymers. However, this remains a great challenge due to the low yield of aromatics and poor catalyst stability, which restrict further development. In recent years, extensive research has been reported on the design of effective catalysts and the optimization of operating conditions to obtain better catalytic performance. In this review, we focus on these related achievements and present a comprehensive overview of different kinds of catalysts, mainly including modified Fischer-Tropsch (FT) catalysts and composite catalysts, as well as their performance and reaction mechanisms. The thermodynamic analysis of the reactions involved in this innovative conversion process and the comparison of different methods are also described in detail in this updated review. Finally, the challenges and prospects for direct syngas conversion are discussed to provide general guidelines for the construction of a well-designed reaction route.

show abstract

Influence of the Preparation Method on Hybrid Catalysts CuO–ZnO–Al2O3 and H-Ferrierite for Syngas Transformation to Hydrocarbons via Methanol

Cited by 6 publications

References 44 publications

Conversion of Synthesis Gas to Light Olefins: Impact of Hydrogenation Activity of Methanol Synthesis Catalyst on the Hybrid Process Selectivity over Cr–Zn and Cu–Zn with SAPO-34

Conversion of Synthesis Gas to Light Olefins: Impact of Hydrogenation Activity of Methanol Synthesis Catalyst on the Hybrid Process Selectivity over Cr–Zn and Cu–Zn with SAPO-34

Production of Light Hydrocarbons from Syngas Using a Hybrid Catalyst

Direct conversion of syngas to aromatics: A review of recent studies

Contact Info

Product

Resources

About