2019
DOI: 10.1016/j.cclet.2018.03.026
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Zirconyl schiff base complex-functionalized MCM-41 catalyzes dehydration of fructose into 5-hydroxymethylfurfural in organic solvents

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Cited by 19 publications
(10 citation statements)
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“…73 The preparation of a novel Zirconyl-Schiff base complex-functionalized MCM-41, Zr(IV)-salen-MCM-41 catalyst, on fructose dehydration in DMSO solvents was done by Xie et al 114 As a result, this mesoporous heterogeneous catalyst has high catalytic activity, as the use of grafted Zr and DMSO as the solvent could facilitate fructose dehydration. 114 Jiménez-Morales et al 115 also demonstrated a mesoporous metal-doped MCM-41 silica catalyst by introducing aluminum into the catalyst by a sol-gel method. The excellent catalytic activity is due to the high concentration of Lewis and Brønsted acid sites, which not only enhanced the isomerization of glucose-tofructose and dehydration of fructose-to-HMF but also limited the HMF degradation and interaction between the synthesized HMF with glucose-intermediates or acetalization with the glucose to form the soluble polymers and humin.…”
Section: Zeolites Catalysts For Hmf Productionmentioning
confidence: 99%
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“…73 The preparation of a novel Zirconyl-Schiff base complex-functionalized MCM-41, Zr(IV)-salen-MCM-41 catalyst, on fructose dehydration in DMSO solvents was done by Xie et al 114 As a result, this mesoporous heterogeneous catalyst has high catalytic activity, as the use of grafted Zr and DMSO as the solvent could facilitate fructose dehydration. 114 Jiménez-Morales et al 115 also demonstrated a mesoporous metal-doped MCM-41 silica catalyst by introducing aluminum into the catalyst by a sol-gel method. The excellent catalytic activity is due to the high concentration of Lewis and Brønsted acid sites, which not only enhanced the isomerization of glucose-tofructose and dehydration of fructose-to-HMF but also limited the HMF degradation and interaction between the synthesized HMF with glucose-intermediates or acetalization with the glucose to form the soluble polymers and humin.…”
Section: Zeolites Catalysts For Hmf Productionmentioning
confidence: 99%
“…It is beneficial to have a higher temperature of the reaction since it enhanced the rehydration of HMF quickly; however, if the reaction undergoes too high a temperature, it will lead to the formation of undesired byproducts. Xie et al 114 stated that the maximum HMF yield had been achieved at its optimum reaction temperature of 140°C for the 4 hours in DMSO solvent using novel Zr(IV)‐salen‐MCM‐41 catalyst. The high temperature of the reaction process promoted fructose dehydration, thus increased the HMF yield, but as the temperature rose to 150°C, the HMF yield slightly decreased at the higher temperature, which contributed to the undesired side reactions of the reaction HMF.…”
Section: Factor That Affecting the Production Rate Of 5‐hmfmentioning
confidence: 99%
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“…Wang et al [47] synthesized Zr-Schiff base/MCM-41 using the methodology delineated in (Figure 34). This catalyst was applied for the conversion of fructose into 5-hydroxymethylfurfural (HMF) The Zr/MCM-41 shown a superior activity than pure MCM-41 because of the Lewis acidity of the metal.…”
Section: Catalysts 2018 8 X For Peer Review 14 Of 63mentioning
confidence: 99%
“…However, in order to avoid contamination of the product, separating them from the reaction mixture requires expensive and tedious purification steps (it is a serious problem) . To overcome this drawback, the immobilization of the homogeneous catalysts on support materials (such as inorganic silica and organic polymers), with the aim of incorporating the preponderance of both heterogeneous and homogeneous catalysis, has become a hot research topic in modern catalysis …”
Section: Introductionmentioning
confidence: 99%