Gas-phase dehydration of glycerol to acrolein catalyzed by hybrid acid sites derived from transition metal hydrogen phosphate and meso-HZSM-5

Ren, Xin; Zhang, Feng; Sudhakar, M.; Wang, Nailiang; Dai, Jinhui; Liu, Licheng

doi:10.1016/j.cattod.2018.08.012

Cited by 35 publications

(33 citation statements)

References 33 publications

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“…However, further research have showed that a high value of total acidity (especially, Brønsted acid sites) causes a high initial activity and selectivity of a catalyst, but the lifetime of such catalysts is very short due to the increasing of the generation of coke on the catalyst surface. [24][25][26][27][28][29] As a result, the selectivity to acrolein can reduce (Table 1). Interestingly, in all represented examples in Table 1, there is a correlation between total acidity and long-life selectivity as well as changes in selectivity which increases significantly for the catalysts with a higher amount of acid sites.…”

Section: Amount and Strength Of Acid Sitesmentioning

confidence: 99%

Tuning of Selectivity for Sustainable Production of Acrolein from Glycerol

Belousov

2021

ChemistrySelect

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The catalytic dehydration of glycerol into acrolein is a rapidly growing area of both scientific interest and technological importance. The main problem faced by researchers is enhancement of selectivity while maintaining the stability and activity of a catalyst. This minireview is centered on key approaches for tuning of selectivity: changing of physicochemical properties (type of acid sites, its amount, pore and channel size, and doping with noble metals) and selection of optimal reaction conditions (temperature, contact time, feedstock composition, co-feeding O 2 or air). This overview also proposes and discusses the use of metal-organic frameworks as novel catalysts to overcome the main challenges in the dehydration of glycerol.

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Section: Amount and Strength Of Acid Sitesmentioning

confidence: 99%

Tuning of Selectivity for Sustainable Production of Acrolein from Glycerol

Belousov

2021

ChemistrySelect

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“…The hydrogen phosphates of transition metals (CuHPO 4 , Mo 1/3 HPO 4 , ZnHPO 4 , NiHPO 4 , MnHPO 4 ) supported on meso-HZSM-5 hybrid catalysts generated an improvement of strong acid sites and acrolein yield. Thus, the yield of acrolein and the life time of catalysts increased by controlling the reaction pathways and reducing coke formation ( Ren et al, 2019 ). The oxi-dehydration of glycerol was catalyzed by H 5 PV 2 Mo 10 O 40 loaded on to the ZSM-5 zeolite with high selectivity to acrylic acid.…”

Section: Catalytic Processes With Transition Metals On Zeolitesmentioning

confidence: 99%

“…For this purpose, improved catalysts that contribute to the selective production of desired biofuels and biochemical are necessary. Advanced research of such catalysts is in progress ( Wang L. et al, 2017 ; Ren et al, 2019 ; Gopinath et al, 2020 ; Saab et al, 2020 ; Xia et al, 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Recent Advances in Catalysis Based on Transition Metals Supported on Zeolites

et al. 2021

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This article reviews the current state and development of thermal catalytic processes using transition metals (TM) supported on zeolites (TM/Z), as well as the contribution of theoretical studies to understand the details of the catalytic processes. Structural features inherent to zeolites, and their corresponding properties such as ion exchange capacity, stable and very regular microporosity, the ability to create additional mesoporosity, as well as the potential chemical modification of their properties by isomorphic substitution of tetrahedral atoms in the crystal framework, make them unique catalyst carriers. New methods that modify zeolites, including sequential ion exchange, multiple isomorphic substitution, and the creation of hierarchically porous structures both during synthesis and in subsequent stages of post-synthetic processing, continue to be discovered. TM/Z catalysts can be applied to new processes such as CO2 capture/conversion, methane activation/conversion, selective catalytic NOx reduction (SCR-deNOx), catalytic depolymerization, biomass conversion and H2 production/storage.

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“…2 The applications of glycerol to valuable products have been a research hotspot so far. 3 Consequently, many researchers 1,[4][5][6][7][8] have focused on designing effective catalysts for conversion of glycerol to acrolein, which is applied widely in the production of textiles, polymers, acrylic acid esters and methionine.…”

Section: Introductionmentioning

confidence: 99%

“…Gas-phase conversion of glycerol is generally considered as an environmentally friendly and economical approach. Various solid acid catalysts have been studied in this important reaction, including phosphates, 9 metal oxides, 4,10 zeolites, 7,11 and heteropolyacids. 5,6,12,13 Among these acid catalysts, phosphate catalysts have been widely studied in the glycerol dehydration reaction due to its superior catalytic performance.…”

Section: Introductionmentioning

confidence: 99%

Catalytic Dehydration of Glycerol to Acrolein over Aluminum Phosphate Catalysts

Ding

Liu

et al. 2020

J. Braz. Chem. Soc.

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Gas phase conversion of glycerol to acrolein over a variety of aluminum phosphate (AlP) catalysts synthesized by a simple replacement reaction method with a variation in calcination temperature (300-700 °C, AlP-300, AlP-400, AlP-500, AlP-600, and AlP-700, respectively) has been investigated. The textural properties, acidities and coke contents of the samples were also determined. The catalysts were presented in an amorphous state when the AlP sample was calcined below 500 °C. Further increasing the calcination temperature promoted the formation of orthorhombic α-AlPO 4 crystal. The weak acid sites increased when the calcination temperature was raised from 300 to 500 °C. However, the weak acid sites decreased when the AlP was calcined above 500 °C. The acidity of the catalyst played a crucial role in the glycerol dehydration reaction. The maximum acrolein selectivity of 66% at 98% glycerol conversion was obtained over AlP-500 catalyst, due to the largest number of acid sites and appropriate textural properties. AlP-700 exhibited the lowest glycerol conversion, owing to the formation of orthorhombic α-AlPO 4 crystalline phase and the lowest amount of acid sites under high calcination temperature. The significant reduction in the acidity of the used sample led to a decrease of glycerol conversion.

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Gas-phase dehydration of glycerol to acrolein catalyzed by hybrid acid sites derived from transition metal hydrogen phosphate and meso-HZSM-5

Cited by 35 publications

References 33 publications

Tuning of Selectivity for Sustainable Production of Acrolein from Glycerol

Tuning of Selectivity for Sustainable Production of Acrolein from Glycerol

Recent Advances in Catalysis Based on Transition Metals Supported on Zeolites

Catalytic Dehydration of Glycerol to Acrolein over Aluminum Phosphate Catalysts

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