Synthesis of Cumene from Lignin by Catalytic Transformation

Jin, Feng; Fan, Mingming; Jia, Qika; Li, Quanxin

doi:10.1063/1674-0068/30/cjcp1703038

Cited by 12 publications

(3 citation statements)

References 36 publications

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“…In our previous work, we have investigated using biomass or bio-oil for the production of aromatic chemicals, including C 6 -C 8 aromatics, ethylbenzene, cumene, phenol and C 8 -C 15 aromatics. [44][45][46][47][48] To produce bio-based PX, we also investigated recently the catalytic pyrolysis of sawdust over zeolites modified with single metal oxides such as La 2 O 3 , CeO 2 , MgO or ZnO. 42 The present work aimed to directionally convert furanic compounds into PX and understand the reaction mechanism.…”

Section: Introductionmentioning

confidence: 99%

Selective conversion of furans to p‐xylene with surface‐modified zeolites

Zhu

Fan

Wang

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND Owing to the growing consumption of oil and the negative environmental impacts, the production of p‐xylene (PX) from renewable biomass has gained significant attention recently. However, the major challenge for the production of PX from biomass or furans is how to improve the yield and selectivity of PX, along with reducing coke. RESULTS The para selectivity in the catalytic conversion of furans was greatly enhanced owing to the deactivation of external surface and the adjustment of pore entrance. Co‐catalytic conversion of furans and methanol significantly enhanced the production of PX by the Diels–Alder reactions between furans and olefins and the alkylation of benzene/toluene with methanol. The highest PX yield of 17.8 C‐mol% with a p‐xylene/xylene ratio of 94.5% was obtained by the co‐conversion of 2‐methylfuran with methanol over the 15%La/10%Ce/HZ catalyst. CONCLUSION This work proved that furans (2‐methylfuran, 2,5‐dimethylfuran, furfural and furan) were able to be selectively converted into a high‐value chemical (PX) over the 15%La/10%Ce/HZ catalyst. The transformation mainly involved four key reactions: the catalytic cracking of furans, the Diels–Alder reactions, the alkylation of aromatics and the isomerization of xylenes over the surface‐modified zeolite. © 2019 Society of Chemical Industry

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Section: Introductionmentioning

confidence: 99%

Selective conversion of furans to p‐xylene with surface‐modified zeolites

Zhu

Fan

Wang

et al. 2019

J of Chemical Tech & Biotech

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“…When embedded or impregnated in the biomass, catalysis in CFP is known to have a lowering effect on the reaction temperature; however, the precise mechanism is still unclear at present . Moreover, higher operating temperatures were found to enhance the yield and selectivity of aromatic hydrocarbons in CFP-oil. − …”

Section: Process Parameters and System Structurementioning

confidence: 99%

Perspectives of Biomass Catalytic Fast Pyrolysis for Co-refining: Review and Correlation of Literature Data from Continuously Operated Setups

Yıldız

Prins

2022

Energy Fuels

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For the co-processing of pyrolysis-based biocrudes within petroleum refineries, a degree of conditioning/upgrading involving the cracking of the oligomers and (partial) removal of oxygen could be operationally beneficial. By inducing a complex set of reactions in biomass-derived fast pyrolysis vapors, catalytic fast pyrolysis (CFP) ensures significant changes in oxygen functionalities and alleviates oxygen concentration in the resulting liquid intermediate (CFP-oil). Due to its reduced oxygen content and acidity, CFP-oil could be considered suitable for co-feeding in FCC units and/or for co-hydrotreatment (co-HT) with gas oils within the existing crude oil processing infrastructure. On the operational side, however, research concerning CFP of biomass has shown poor results: deoxygenation of pyrolysis vapors goes along with a progressive reduction in CFP-oil yield. Apart from any control over catalyst activity, selectivity, and lifetime, the other critical issue is in the process design, which is complicated by rapid catalyst deactivation through coke formation and catalyst poisoning by biomass-originated minerals. This review analyzes the outcome of research efforts concerning in- and ex situ CFP of biomass based on carefully selected literature studies reporting the results obtained from meso- and macrolevel laboratory-scale setups, pilot, process development units (PDU), and (semi-) commercial process units, wherein the biomass feedstock and catalyst is fed continuously. Key operational aspects such as the reactor technology, reactive medium, processing mode, and optimization of process parameters are addressed. The performances of continuously operated CFP units were benchmarked through a comparison of yields and elemental compositions of (by-)products. Despite the considerable research efforts related to CFP technology development, the co-processing of CFP-oil is still in its infancy. However, in close collaboration with refinery professionals, it could be made a serious candidate for biobased co-feeding. For refinery integration, quality parameters of CFP-oil, e.g., acidity, stability, and miscibility, should be considered as crucial as its oxygen content.

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“…También se ha reportado la utilización de un catalizador de Ni/γ-Al 2 O 3 en un reactor de lecho fijo [3] y el empleo de bentonita con pilares de aluminio intercambiada con cationes K + , La 3+ y Al 3+ [4]. El cumeno se puede obtener además a partir de la hidroalquilación del benceno con acetona utilizando catalizadores bifuncionales conteniendo un sistema binario de óxido de cobre-cromito de cobre como el componente hidrogenado, y zeolita BEA, MOR, FAU o MFI como el componente de alquilación [5], así como también a partir de la lignina en un proceso de tres etapas en el cual se incluye la pirolisis catalítica de la lignina para obtener una mezcla de compuestos aromáticos, seguido de la desalquilación de estos compuestos aromáticos para obtener una mezcla de compuestos aromáticos ricos en benceno, y la posterior transformación de estos últimos compuestos en cumeno a través de reacciones en fase líquida utilizando catalizadores líquidos iónicos [6].…”

Section: Introductionunclassified

Simulación del proceso de producción del cumeno mediante el simulador ChemCAD

Sánchez

González

Sánchez³

et al. 2020

RECyT

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En el presente trabajo se realizó la simulación del proceso de producción del cumeno a partir de la alquilación del benceno con propileno mediante el simulador ChemCAD® versión 5.2.0. Se obtuvieron las curvas de calor de cada uno de los intercambiadores de calor de tubo y coraza utilizados, mientras que se calculó la composición y caudal de cada una de las corrientes involucradas en el proceso. También se efectuó un estudio de sensibilidad con el fin de conocer la influencia de la presión de operación del tanque flash sobre la cantidad de cumeno a obtener por la corriente del fondo de este equipo. Se obtienen 13 403,54 kg/h de cumeno por el tope de la segunda columna de destilación (columna de cumeno), con una pureza del 98,6%, siendo el benceno (1,2%) la principal impureza encontrada en esta corriente. El tanque flash deberá operar a una presión de 7 atm para obtener el mayor rendimiento de cumeno en este equipo.

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Synthesis of Cumene from Lignin by Catalytic Transformation

Cited by 12 publications

References 36 publications

Selective conversion of furans to p‐xylene with surface‐modified zeolites

Selective conversion of furans to p‐xylene with surface‐modified zeolites

Perspectives of Biomass Catalytic Fast Pyrolysis for Co-refining: Review and Correlation of Literature Data from Continuously Operated Setups

Simulación del proceso de producción del cumeno mediante el simulador ChemCAD

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