Production of Aromatic Hydrocarbons from Syngas: Principles, Problems, and Prospects

Makeeva, D. A.; Куликов, Л. А.; Afokin, M. I.; Knyazeva, M. I.; Караханов, Э. А.; Максимов, А. Л.

doi:10.1134/s1070427220070010

Cited by 12 publications

(3 citation statements)

References 68 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…ZnO is known to be active in hydrogenation processes and therefore is able to hydrogenate olefins that were produced over the zeolite. ,, Particularly interesting is the fact that not all abovementioned OX-XEO catalysts produce an aromatic fraction. This observation is quite unexpected, as similar reactions in the literature using a variety of different oxides combined with H-ZSM-5 reported aromatics to be the main product class. ,,,,,,− As both components of the OX-ZEO catalyst affect the product distribution, it is crucial to fully understand the influence of each to be able to tailor the yields.…”

Section: Resultsmentioning

confidence: 88%

Influence of the ZnCrAl Oxide Composition on the Formation of Hydrocarbons from Syngas

et al. 2022

View full text Add to dashboard Cite

The conversion of syngas into value-added hydrocarbons gains increasing attention due to its potential to produce sustainable platform chemicals from simple starting materials. Along this line, the “OX-ZEO” process that combines a methanol synthesis catalyst with a zeolite, capable of catalyzing the methanol-to-hydrocarbon reaction, was found to be a suitable alternative to the classical Fischer–Tropsch synthesis. Hitherto, understanding the mechanism of the OX-ZEO process and simultaneously optimizing the CO conversion and the selectivity toward a specific hydrocarbon remains challenging. Herein, we present a comparison of a variety of ZnCrAl oxides with different metal ratios combined with a H-ZSM-5 zeolite for the conversion of syngas to hydrocarbons. The effect of aluminum on the catalytic activity was investigated for ZnCrAl oxides with a Zn/Cr ratio of 4:1, 1:1, and 1:2. The product distribution and CO conversion were found to be strongly influenced by the Zn/Cr/Al ratio. Although a ratio of Zn/Cr of 1:2 was best to produce lower olefins and aromatics, with aromatic selectivities of up to 37%, catalysts with a 4:1 ratio revealed high paraffin selectivity up to 52%. Notably, a distinct effect of aluminum in the oxide lattice on the catalytic activity and product selectivity was observed, as a higher Al content leads to a lower CO conversion and a changed product spectrum. We provide additional understanding of the influence of different compositions of ZnCrAl oxides on their surface properties and the catalytic activity in the OX-ZEO process. Furthermore, the variation of the zeolite component supports the important role of the channel topology of the porous support material for the hydrocarbon production. In addition, variation of the gas hourly space velocity showed a correlation of contact time, CO conversion, and hydrocarbon selectivity. At a gas hourly space velocity of 4200 mL/gcat h, CO conversion as high as 44% along with a CO2 selectivity of 42% and a lower paraffin (C2 0–C4 0) selectivity of 41% was observed.

show abstract

Section: Resultsmentioning

confidence: 88%

Influence of the ZnCrAl Oxide Composition on the Formation of Hydrocarbons from Syngas

et al. 2022

View full text Add to dashboard Cite

show abstract

“…138,182 Aromatics are not primary FTS products, while little aromatics are often obtained in the Fe-HTFT condition. 183 They are formed from aromatisation of lower olefins. Aromatisation of methanol/DME has also been investigated extensively.…”

Section: Methanol Synthesismentioning

confidence: 99%

Chemicals and Fuels from Biomass via Fischer–Tropsch Synthesis: A Route to Sustainability

2022

Focus on Catalysts

View full text Add to dashboard Cite

“…In the petrochemical industry, methanol and lower olefins such as ethylene, propylene, and butylene, and aromatics like benzene, toluene, and xylene are produced as main chemicals and then further converted into industrial products. [2][3][4][5][6][7] The world's utilization of fossil fuels and chemicals which are derived from non-replaceable petroleum resources has increased remarkably. The depletion of fossil fuels and hydrocarbons increases environmental pollution and the emission of CO 2 into the atmosphere, which leads to climate change.…”

Section: Introductionmentioning

confidence: 99%

Recent advances in biomass-derived platform chemicals to valeric acid synthesis

et al. 2022

View full text Add to dashboard Cite

show abstract

Production of Aromatic Hydrocarbons from Syngas: Principles, Problems, and Prospects

Cited by 12 publications

References 68 publications

Influence of the ZnCrAl Oxide Composition on the Formation of Hydrocarbons from Syngas

Influence of the ZnCrAl Oxide Composition on the Formation of Hydrocarbons from Syngas

Chemicals and Fuels from Biomass via Fischer–Tropsch Synthesis: A Route to Sustainability

Recent advances in biomass-derived platform chemicals to valeric acid synthesis

Contact Info

Product

Resources

About