Building hierarchical zeolite structure by post-synthesis treatment to promote the conversion of furanic molecules into biofuels

Hu, Danxin; Hu, Hualei; Jin, Hong; Zhang, Pilan; Hu, Yunhan; Ying, Suhua; Li, Xianming; Yang, Yong; Zhang, Jian; Wang, Lei

doi:10.1016/j.apcata.2019.117338

Cited by 24 publications

(17 citation statements)

References 58 publications

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“…In particular, employing the zeolite HZSM‐5 (Si/Al=25), a BEMF selectivity of 63.3 mol% was obtained at complete BHMF conversion, which was almost double of the BEMF selectivities ascertained with the acid resins. In fact, it is well known that the Brønsted acidity promotes the formation of by‐products, such as 2,5‐dihydro‐2‐ethoxy‐2‐(ethoxymethyl)‐5‐methylenefuran (DHEMMF, Figure S12) and 1‐ethoxy‐3‐hexene‐2,5‐dione (EHED, Figure S13), deriving, respectively, from the hydration of BHMF and the successive opening‐ring, as reported in Scheme S2 [20a,32–34] …”

Section: Resultsmentioning

confidence: 99%

Integrated Cascade Process for the Catalytic Conversion of 5‐Hydroxymethylfurfural to Furanic and TetrahydrofuranicDiethers as Potential Biofuels

et al. 2022

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The depletion of fossil resources is driving the research towards alternative renewable ones. Under this perspective, 5hydroxymethylfurfural (HMF) represents a key molecule deriving from biomass characterized by remarkable potential as platform chemical. In this work, for the first time, the hydrogenation of HMF in ethanol was selectively addressed towards 2,5-bis(hydroxymethyl)furan (BHMF) or 2,5-bis(hydroxymethyl)tetrahydrofuran (BHMTHF) by properly tuning the reaction conditions in the presence of the same commercial catalyst (Ru/ C), reaching the highest yields of 80 and 93 mol%, respectively. These diols represent not only interesting monomers but strategic precursors for two scarcely investigated ethoxylated biofuels, 2,5-bis(ethoxymethyl)furan (BEMF) and 2,5-bis(ethoxymethyl)tetrahydrofuran (BEMTHF). Therefore, the etherification with ethanol of pure BHMF and BHMTHF and of crude BHMF, as obtained from hydrogenation step, substrates scarcely investigated in the literature, was performed with several commercial heterogeneous acid catalysts. Among them, the zeolite HZSM-5 (Si/Al = 25) was the most promising system, achieving the highest BEMF yield of 74 mol%. In particular, for the first time, the synthesis of the fully hydrogenated diether BEMTHF was thoroughly studied, and a novel cascade process for the tailored conversion of HMF to the diethyl ethers BEMF and BEMTHF was proposed.

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Section: Resultsmentioning

confidence: 99%

Integrated Cascade Process for the Catalytic Conversion of 5‐Hydroxymethylfurfural to Furanic and TetrahydrofuranicDiethers as Potential Biofuels

et al. 2022

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“…It is also worth noting that, from HMF, ZrSi10 gives the monoether 8 as the main product. This is an interesting intermediate for the synthesis of anionic surfactants due to its residual hydroxyl group, while in the literature it is usually reported the preparation of monoether 7, [66][67][68][69][70][71][72][73] which can be used as biofuel, but having worse properties compared to the diether.…”

Section: Discussionmentioning

confidence: 99%

“…To improve the stability and the miscibility with diesel, the aldehyde group of HMF must be functionalized as an ether, making the diether the most desirable product. Whereas the production of monoethers, which has been studied quite extensively, is far easier, [66][67][68][69][70][71][72][73] the diether synthesis is troublesome, involving a reduction step prior to etherification. 51,[74][75][76] The same applies for furfural, where the preparation of ethers requires the combination of a reduction step followed by the etherification of the resulting alcohol.…”

Section: Introductionmentioning

confidence: 99%

On demand production of ethers or alcohols from furfural and HMF by selecting the composition of a Zr/Si catalyst

Zaccheria¹,

Bossola²,

Scotti³

et al. 2020

Catal. Sci. Technol.

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“…The reaction of FA with (biomass-derivable) ethanol gives 2-(ethoxymethyl)furan (EMF) and ethyl levulinate (EL) (Scheme 1) [121]. The applications of EMF include bio-solvent [122], pharmaceuticals, food flavor [123][124][125][126], aging flavor for beer storage [127][128][129][130][131] or white wine [132] and fuel additive [122,[124][125][126][133][134][135][136][137] since it has a high energy density, cetane number [138] and capacity to reduce soot emissions [124,134,139,140]. On the other hand, EL is an attractive oxygenated fuel extender (its high oxygen content enhances engine efficiency, improves flow properties, etc.…”

Section: General Considerationsmentioning

confidence: 99%

Versatile Coordination Polymer Catalyst for Acid Reactions Involving Biobased Heterocyclic Chemicals

et al. 2021

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The chemical valorization/repurposing of biomass-derived chemicals contributes to a biobased economy. Furfural (Fur) is a recognized platform chemical produced from renewable lignocellulosic biomass, and furfuryl alcohol (FA) is its most important application. The aromatic aldehydes Fur and benzaldehyde (Bza) are commonly found in the slate of compounds produced via biomass pyrolysis. On the other hand, glycerol (Gly) is a by-product of the industrial production of biodiesel, derived from fatty acid components of biomass. This work focuses on acid catalyzed routes of Fur, Bza, Gly and FA, using a versatile crystalline lamellar coordination polymer catalyst, namely [Gd(H4nmp)(H2O)2]Cl·2H2O (1) [H6nmp=nitrilotris(methylenephosphonic acid)] synthesized via an ecofriendly, relatively fast, mild microwave-assisted approach (in water, 70 °C/40 min). This is the first among crystalline coordination polymers or metal-organic framework type materials studied for the Fur/Gly and Bza/Gly reactions, giving heterobicyclic products of the type dioxolane and dioxane, and was also effective for the FA/ethanol reaction. 1 was stable and promoted the target catalytic reactions, selectively leading to heterobicyclic dioxane and dioxolane type products in the Fur/Gly and Bza/Gly reactions (up to 91% and 95% total yields respectively, at 90 °C/4 h), and, on the other hand, 2-(ethoxymethyl)furan and ethyl levulinate from heterocyclic FA.

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Building hierarchical zeolite structure by post-synthesis treatment to promote the conversion of furanic molecules into biofuels

Cited by 24 publications

References 58 publications

Integrated Cascade Process for the Catalytic Conversion of 5‐Hydroxymethylfurfural to Furanic and TetrahydrofuranicDiethers as Potential Biofuels

Integrated Cascade Process for the Catalytic Conversion of 5‐Hydroxymethylfurfural to Furanic and TetrahydrofuranicDiethers as Potential Biofuels

On demand production of ethers or alcohols from furfural and HMF by selecting the composition of a Zr/Si catalyst

Versatile Coordination Polymer Catalyst for Acid Reactions Involving Biobased Heterocyclic Chemicals

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