The design of a CZ@H-β-P catalyst with core shell structure and its application in LPG synthesis from syngas

Lu, Peng; Shen, Dongming; Cheng, Shilin; Hondo, Emmerson; Chizema, Linet Gapu; Wang, Chengwei; Gai, Xikun; Lu, Chao; Yang, Renqiang

doi:10.1016/j.fuel.2018.02.159

Cited by 15 publications

(8 citation statements)

References 39 publications

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“…Liquid petroleum gas (LPG) synthesis was achieved from syngas by synthesizing the CZ@H-β-P catalyst by preparing the zeolite through a hydrothermal technique and later coated on a Cu/ ZnO core with Ludox. 127 Moreover, the catalyst promoted the intermediate reactions like conversion of methanol through dehydrogenation to dimethyl ether, which participated in the generation of LPG. CO conversion and hydrocarbon selectivity were recorded at 61.8% and 64.2%, respectively.…”

Section: Energy and Fuelsmentioning

confidence: 99%

“…Methyl formate was formed due to a nucleophilic addition–elimination reaction mechanism and carbonylation of methanol and CO. Liquid petroleum gas (LPG) synthesis was achieved from syngas by synthesizing the CZ@H-β-P catalyst by preparing the zeolite through a hydrothermal technique and later coated on a Cu/ZnO core with Ludox . Moreover, the catalyst promoted the intermediate reactions like conversion of methanol through dehydrogenation to dimethyl ether, which participated in the generation of LPG.…”

Section: Gasificationmentioning

confidence: 99%

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A Combined Overview of Combustion, Pyrolysis, and Gasification of Biomass

2018

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From the conventional use of biomass in the form of heating to the modern day use of biomass in the form of electricity generation and biofuel production, biomass has always been part of the evolution of mankind. Modern day use of biomass is gradually becoming more complex, and engineering played an important role in defining different directions. This review provides an overall view of biomass utilization through thermal treatment including combustion, pyrolysis, and gasification. Efficient use of biomass with the desired output and minimizing the drawbacks are the core of the research, and marginal focus is being held on developing new techniques. The variety of composition and uptake of different elements throughout the lifespan of biomass produces a mixture of results. In general, it can be seen that the optimization was observed either in the form of chemical looping combustion to prevent greenhouse gas emission or in upgrading of bio-oil to produce biofuels. The significant factor is the reaction conditions, which define the ultimate product yield and the products' performance in different applications. Moreover, the development of new systems is desired in the present scenario due to the limited possibility of further improvement in the current systems.

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Section: Energy and Fuelsmentioning

confidence: 99%

Section: Gasificationmentioning

confidence: 99%

A Combined Overview of Combustion, Pyrolysis, and Gasification of Biomass

2018

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“…Figure 8 shows the typical mechanism for the direct conversion of syngas to LPG. Lu et al (2018) [134] investigated the synthesis of CZ@H-Β-P core shell catalyst on the direct conversion of syngas to LPG, where they were able to synthesize the catalysts via physical adhesive method. They studied the effect of temperature, zeolite type, catalyst structure and metal to zeolite ratio on the catalyst activity and hydrocarbon distribution.…”

Section: Recent Studies On the Synthesis Of Core Shell Catalystsmentioning

confidence: 99%

A Review on the Conversion of Synthetic Gas to LPG over Hybrid Nanostructure Zeolites Catalysts

Al-Qadri

Nasser

Galadima³

et al. 2022

ChemistrySelect

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Recently, Liquified petroleum gas (LPG) attracts wide applications due to its high heating value and clean combustibility. An innovative approach to synthesis of LPG from syngas was established based on Fisher-Tropsch (F-T) technology. However, the conversion and selectivity are generally low with the classical catalysts. The hybrid system of methanol and zeolitebased catalyst was established as a potential approach to promote such a process. To strongly overcome the large demand of LPG and grasp the research work in this subject, a comprehensive review became necessary. LPG is basically produced from syngas through the direct method, where most recent studies lay on, and the indirect or semi direct approach. There were several factors affecting the process performance, which mainly are the reaction temperature, reaction pressure, type of the hybrid catalyst, carbon monoxide to hydrogen ratio, mixture flow rate, and time-on-stream of the reaction. The most common reaction conditions reported in the literature are 260-400 °C, 10-50 bars and H 2 to CO ratio of 2. However, the most important parameter considered was the catalyst, which is a key factor of interest. The two main issues controlling the catalyst performance were the synergetic effect between the two hybridized catalysts and the used type of zeolite. It was perceived that the higher the zeolite membered rings the better the LPG selectivity (i. e., BEA, and USY provided the higher LPG production rate).

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“…Syngas is an important platform for the synthesis of chemicals and fuels from various carbon resources such as coal, natural gas, and biomass . Recently, an increasing number of studies demonstrated that the OXZEO (metal oxide-zeolite) catalyst concept provides an effective strategy to tackle the long-standing selectivity challenge for direct syngas conversion to light olefins since it was first reported in 2016. − The selectivity of light olefins (C 2 = –C 4 = ) reaches 80% in hydrocarbons, far exceeding the theoretical limit predicted by the Anderson–Schultz–Flory distribution model in the conventional Fischer–Tropsch synthesis process . Furthermore, this new syngas-to-light-olefins OXZEO technology was demonstrated successfully in an industrial scale pilot-plant with 1000 ton olefins/year output .…”

Section: Introductionmentioning

confidence: 99%

Visualization of the Active Sites of Zinc–Chromium Oxides and the CO/H₂ Activation Mechanism in Direct Syngas Conversion

Chen,

Han,

Pan

et al. 2024

J. Am. Chem. Soc.

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Despite wide studies demonstrating the versatility of the metal oxide-zeolite (OXZEO) catalyst concept to tackle the selectivity challenge in syngas chemistry, the active sites of metal oxides and the mechanism of CO/H 2 activation remain to be elucidated. Herein, we demonstrate experimentally the role of Cr in zinc−chromium oxides and unveil visually, for the first time, the active sites for CO activation employing scanning transmission electron microscopy-electron energy loss spectroscopy using the volumetric density of surface carbon species as a descriptor. The ZnCr 2 O 4 spinel surface with atomic ZnO x overlayer is the most active site for C−O bond dissociation, particularly at the narrow ZnCr 2 O 4 (110) facets constrained between the (311) and (111) facets, followed by the Cr-doped wurtzite ZnO surface. In comparison, the surfaces of ZnCr 2 O 4 with aggregated ZnO x overlayers, pure ZnO, and the stoichiometric ZnCr 2 O 4 exhibit a significantly lower activity. In situ synchrotron-based vacuum ultraviolet photoionization mass spectrometric study on different temperature programmed surface reactions with isotopes of C 18 O, 13 CO, and D 2 validates direct CO dissociation over ZnCr n oxides in CO, forming CH 2 and further to hydrocarbons if H 2 is present and CH 2 CO intermediates in syngas. The activity of CO dissociation and hydrogenation over ZnCr n oxides correlates well with the syngas-tolight-olefins activity of ZnCr n -SAPO-18 composite catalysts as a function of the Cr/Zn ratio.

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The design of a CZ@H-β-P catalyst with core shell structure and its application in LPG synthesis from syngas

Cited by 15 publications

References 39 publications

A Combined Overview of Combustion, Pyrolysis, and Gasification of Biomass

A Combined Overview of Combustion, Pyrolysis, and Gasification of Biomass

A Review on the Conversion of Synthetic Gas to LPG over Hybrid Nanostructure Zeolites Catalysts

Visualization of the Active Sites of Zinc–Chromium Oxides and the CO/H₂ Activation Mechanism in Direct Syngas Conversion

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The design of a CZ@H-β-P catalyst with core shell structure and its application in LPG synthesis from syngas

Cited by 15 publications

References 39 publications

A Combined Overview of Combustion, Pyrolysis, and Gasification of Biomass

A Combined Overview of Combustion, Pyrolysis, and Gasification of Biomass

A Review on the Conversion of Synthetic Gas to LPG over Hybrid Nanostructure Zeolites Catalysts

Visualization of the Active Sites of Zinc–Chromium Oxides and the CO/H2 Activation Mechanism in Direct Syngas Conversion

Contact Info

Product

Resources

About

Visualization of the Active Sites of Zinc–Chromium Oxides and the CO/H₂ Activation Mechanism in Direct Syngas Conversion