Synthesis of diesel additives from fructose over PWA/SBA-15 catalyst

Patil, Chetana R.; Rode, Chandrashekhar V.

doi:10.1016/j.fuel.2017.12.027

Cited by 47 publications

(24 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…After catalyst amount being further raised up to 1.0 g, the 5‐HMF selectivity and yield varied slightly at first and then declined drastically to 53.02±1.13% and 51.08±0.91%. This might be attributed to the production of large quantities of soluble polymers and/or humins catalyzed by excessive amounts of surface acid sites . Another proposed reason for the decrease of 5‐HMF selectivity and yield could be that 5‐HMF formed in fructose dehydration was then partially converted into levulinic and formic acid by‐products, which was in good agreement with the previous report .…”

Section: Resultssupporting

confidence: 90%

“…Among these, homogenous catalysts like mineral acids, acidic‐ionic liquids etc exhibit several drawbacks with respect to the low selectivity, corrosion of equipment, use of large amounts of catalyst, difficult recovery of catalyst etc . Alternatively, heterogeneous catalysts such as solid acids are becoming more and more attractive due to their stronger acidity and easier regeneration as well as less corrosivity, which accelerate their wide application in production of 5‐HMF from fructose ,,. Currently, various types of solid acid catalysts have been designed for the preparation of 5‐HMF, such as heteropoly acids, tungstated zirconias, cerium phosphates, zirconium phosphates, niobium phosphates, zirconium hydrogen phosphates, carbon catalysts etc.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

An Excellent Solid Acid Catalyst Derived from Microalgae Residue for Fructose Dehydration into 5‐Hydroxymethylfurural

et al. 2019

View full text Add to dashboard Cite

An environmentally benign carbonaceous solid acid was synthesized from microalgae residue discarded after biodiesel production. Thereafter, the as‐synthesized carbonaceous solid acid was used for catalytic dehydration of fructose into 5‐hydroxymethylfurural (5‐HMF). Various techniques such as X‐ray diffraction, N2 adsorption‐desorption, scanning electron microscopy, Fourier transform infrared, Raman, X‐ray photoelectron spectroscopy and pyridine adsorption etc were conducted to elucidate the structural and acidic properties of the solid acid so as to build the structure‐performance relationship. The results suggested that large amounts of ‐SO3H, phenolic ‐OH and ‐COOH groups were grafted onto the investigated material and most of the surface acid sites were assigned to strong Brönsted acid sites. In screening tests with other commercial catalysts, the as‐prepared sample presented excellent catalytic activity with 76.65±2.53% yield of 5‐HMF under aqueous conditions. The dehydration of fructose in dimethyl sulfoxide‐water biphasic system was also tested, affording the 5‐HMF yield as high as 93.84±1.12%. This work provides an efficient and selective solid acid from biodiesel waste and might shed light on an alternative catalyst for highly efficient production of 5‐HMF instead of homogeneous catalysts.

show abstract

Section: Resultssupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

An Excellent Solid Acid Catalyst Derived from Microalgae Residue for Fructose Dehydration into 5‐Hydroxymethylfurural

et al. 2019

View full text Add to dashboard Cite

show abstract

“…The transformation of fructose into EMF is a sequential reaction that consists of the dehydration of fructose into HMF and subsequent etherification of in situ formed HMF with ethanol to yield EMF (Scheme ). Generally, a suitable Brønsted acid concentration and strength are imperative for the consecutive dehydration–etherification reaction because a low acid concentration and weak acid intensity are not active enough for the fructose dehydration reaction, whereas too high an acid concentration and strong acid intensity could result in the decomposition of formed EMF into ELevu . This was demonstrated by different dominating products being observed over a composite material, namely, phosphotungstic acid (PWA)‐SBA‐15, through changing the amount of PWA incorporated into the SBA‐15 framework at 100 °C over 24 h .…”

Section: Catalytic Processes With An Increase In Carbon Numbermentioning

confidence: 99%

“…With increasing amounts of PWA incorporation up to 20 %, EMF (67 % yield with 95 % fructose conversion) was the dominating product accompanied by 12 % yield of ELevu. The trend in yield was determined to be ELevu>EMF>HMF as the amount of PWA incorporation was further increased (e.g., 30 %); this could be ascribed to increasing acidity leading to the decomposition of EMF into ELevu . Similarly, sulfonic acid (i.e., propylsulfonic acid and arenesulfonic acid) functionalized SBA‐15 (i.e., Pr‐SO 3 H‐SBA‐15 and Ar‐SO 3 H‐SBA‐15) was found to efficiently catalyze the conversion of fructose into EMF with DMSO as a cosolvent .…”

Section: Catalytic Processes With An Increase In Carbon Numbermentioning

confidence: 99%

Catalytic Upgrading of Biomass‐Derived Sugars with Acidic Nanoporous Materials: Structural Role in Carbon‐Chain Length Variation

Saravanamurugan

et al. 2018

ChemSusChem

View full text Add to dashboard Cite

Shifting from petroleum‐based resources to inedible biomass for the production of valuable chemicals and fuels is one of the significant aspects in sustainable chemistry for realizing the sustainable development of our society. Various renowned biobased platform molecules, such as 5‐hydroxymethylfurfural, furfural, levulinic acid, and lactic acid, are successfully accessible from the transformation of biobased sugars. To achieve the specific reaction routes, heterogeneous nanoporous acidic materials have served as promising catalysts for the conversion of bio‐sugars in the past decade. This Review summarizes advances in various nanoporous acidic materials for bio‐sugar conversion, in which the number of carbon atoms is variable and controllable with the assistance of the switchable structure of nanoporous materials. The major focus of this Review is on possible reaction pathways/mechanisms and the relationships between catalyst structure and catalytic performance. Moreover, representative examples of catalytic upgrading of biobased platform molecules to biochemicals and fuels through selective C−C cleavage and coupling strategies over nanoporous acidic materials are also discussed.

show abstract

“…Lignocellulose biomass is mainly composed of cellulose, hemicellulose, and lignin [3]-two polysaccharides (cellulose and hemicellulose), and a random polymer mainly composed of phenyl derivatives (lignin). Lignocellulosic biomass is the major component of agricultural waste and forest residue, which are inexpensive and abundant raw materials, as well as a primary source of monosaccharides, including glucose and fructose [4], which can be converted into a variety of different chemicals, including sugar polyols.…”

Section: Introductionmentioning

confidence: 99%

Production of Sorbitol via Catalytic Transfer Hydrogenation of Glucose

et al. 2020

View full text Add to dashboard Cite

Featured Application: Catalytic transfer hydrogenation from alcohols allow converting under mild reaction conditions glucose into sorbitol.Abstract: Sorbitol production from glucose was studied through catalytic transfer hydrogenation (CTH) over Raney nickel catalysts in alcohol media, used as solvents and hydrogen donors. It was found that alcohol sugars, sorbitol and mannitol, can be derived from two hydrogen transfer pathways, one produced involving the sacrificing alcohol as a hydrogen donor, and a second one involving glucose disproportionation. Comparison between short-chain alcohols evidenced that ethanol was able to reduce glucose in the presence of Raney nickel under neutral conditions. Side reactions include fructose and mannose production via glucose isomerization, which occur even in the absence of the catalyst. Blank reaction tests allowed evaluating the extension of the isomerization pathway. The influence of several operation parameters, like the temperature or the catalyst loading, as well as the use of metal promoters (Mo and Fe-Cr) over Raney nickel, was examined. This strategy opens new possibilities for the sustainable production of sugar alcohols.Sorbitol production was reported to be carried out using cellulose in the presence of noble metals [9] and transition metal-based catalysts [10,11]. However, a most extended alternative is its production starting from glucose. At an industrial scale, sorbitol is produced via glucose hydrogenation [2] as it is the most affordable precursor [12], whose production is liable to be obtained via cellulose hydrolysis [13,14]. The reaction mechanism consists of the reduction of carbonyl groups of saccharides under hydrogen pressure in the presence of a solid metal catalyst based on Ni, Pd, Pt, or Ru [15,16]. All these catalysts are easily recoverable and display good catalytic activity in terms of sorbitol yield, operating under aqueous-phase solution [6,[17][18][19][20]. In recent years, Raney nickel and ruthenium catalysts made a clean sweep on sorbitol production. Ru presents higher activity and selectivity to sorbitol [16,21] than Raney nickel catalysts, but this metal is much more expensive than nickel-based catalysts. In this way, Raney nickel was revealed as the most interesting active phase to be used in the industrial-scale hydrogenation of glucose [21,22], mostly because of its low price [23]. Nevertheless, the lower catalytic activity of nickel as compared to other precious-metal-based conventional hydrogenation catalysts, such as ruthenium, results in the need for high hydrogen pressure and harsh operating conditions. Consequently, a significant energy demand must be satisfied compared to that required when using more active hydrogenation catalysts and, thus, higher environmental impacts are associated with the use of Raney nickel catalysts [24].This work focuses on gaining insights into a developing alternative reaction pathway to the conventional hydrogenation procedure used to transform glucose into sorbitol by exploring the feasibility of car...

show abstract

Synthesis of diesel additives from fructose over PWA/SBA-15 catalyst

Cited by 47 publications

References 32 publications

An Excellent Solid Acid Catalyst Derived from Microalgae Residue for Fructose Dehydration into 5‐Hydroxymethylfurural

An Excellent Solid Acid Catalyst Derived from Microalgae Residue for Fructose Dehydration into 5‐Hydroxymethylfurural

Catalytic Upgrading of Biomass‐Derived Sugars with Acidic Nanoporous Materials: Structural Role in Carbon‐Chain Length Variation

Production of Sorbitol via Catalytic Transfer Hydrogenation of Glucose

Contact Info

Product

Resources

About