CATALYSIS LETTERS
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2020
·Vol. 151
·期 6
·1834-1841
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IF 2.482
Feng Xiaoqing,Zhang Lin,Zhu Xuan,Xia Yan,Ma Cuiluan,Liang Jianguang,He Yu-Cai
Furfurylamine is an important furfural-upgrading biobased chemical for the production of pharmaceuticals, biofuels, fibers, additives, polymers, etc. In one-pot reaction system, biomass was tandemly catalyzed to furfurylamine with aluminium-based alkaline-treated graphite (Al-AG) catalyst and recombinant ω-transaminase biocatalyst. Al-AG (3.6 wt%) catalyzed corncob (75.0 g/L) to 110.0 mM furfural at 56.8% yield (based on xylan in corncob) in γ-valerolactone–water (1:4, v:v; pH 1.0) for 40 min at 180 °C. The pH-adjusted corncob-slurry (pH 7.5) containing furfural were catalyzed to furfurylamine at high yield with γ-valerolactone-tolerant Aspergillus terreus ω-transaminase biocatalyst at 35 °C using isopropylamine (3 mol isopropylamine/mol furfural) as amine donor. Such an efficient and sustainable approach for catalytic conversion of biomass to high-value-added biobased furfurylamine was successfully established in tandem reaction with Al-AG and ω-transaminase biocatalyst. Graphic Abstract
研究领域:
生物化学
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催化化学
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可再生资源
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DOI
高影响因子
MOLECULES
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2025
·Vol. 30
·期 6
·1254
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IF 4.6
Yuexia Qin,Zhuyu Zheng,Di Liu,Shuhua Sun,Xiaolei Zhao,Lei Lv,Dengyu Xie,Zhonghui Han,Jinxing He
The effects of furfural and 5-methyl-2-furfural produced by the Maillard reaction on PhIP formation were investigated in chemical models and roasted pork patties. In the chemical models, the results indicated that increasing levels of furfural (r = −0.7338, R2= 0.9557) and 5-methyl-2-furfural (r = −0.7959, R2= 0.9864) significantly reduced PhIP formation, displaying a strong linear correlation. The effects of furfural and 5-methyl-2-furfural on the precursors of phenylalanine (Phe) and phenylacetaldehyde showed a significant reduction in the Phe level, while the level of phenylacetaldehyde was not increased. In addition, neither furfural nor 5-methyl-2-furfural could significantly reduce creatinine or PhIP. Further mechanism studies showed that furfural (5-methyl-2-furfural) directly captured Phe to form the corresponding Schiff base compounds a (2-((furan-2-ylmethylene) amino)-3-phenylpropanoic acid) and b (2-(((5-methylfuran-2-yl)methylene)amino)-3-phenylpropanoic acid). This process reduced the production of phenylacetaldehyde, thereby inhibiting the PhIP formation pathway. More importantly, these two compounds were detected in roasted pork patties to which glucose was added. The above pathway was finally confirmed in roasted pork patties. These results revealed that furfural and 5-methyl-2-furfural, formed during the Maillard reaction, play a significant role in inhibiting the formation of PhIP by reacting with Phe.
研究领域:
食品科学
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营养学
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毒理学
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产品关联
DOI
PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
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2020
·
IF 4.244
Tao Shen,Youqin Hu,Ruijia Hu,Wei Zhuang,Ming Li,Huanqing Niu,Hong Xu,Chenjie Zhu,Hanjie Ying
The continuous production of furfural using vaporization reactor as a continuous stirred tank reactor is reported in this study. 50 g L −1 xylose solution was continuous fed into the reactor and catalyzed by 2 wt% H 2 SO 4 at 433 K gave 82.3% average yield of furfural in 10 h of reaction time. Pulp prehydrolysate derives from prehydrolysis of wood biomass was further used as the raw material for the reaction, and the 78.6% average yield of furfural was achieved for 10 h. According to Aspen Plus simulation, 11.7 tons of saturated steam was required for the production of one ton of furfural under the present reaction system, which is almost half of the traditional one-step method.
研究领域:
生物化学工程
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可再生资源利用
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产品关联
DOI
高影响因子
Energy Science & Engineering
·
2017
·Vol. 5
·期 4
·208-216
·
IF 2.172
Yuan Zhao,Haizhou Lin,Shurong Wang
A novel green reaction system of CO 2 –water–isopropanol has been developed for the production of furfural (FF) from xylose. Initially, a simple CO 2 –water system was investigated, and the results showed that the formation of FF from xylose was greatly enhanced. CO 2 at high pressure could increase the acidity of the reaction system, and thus the FF yield was improved. By raising the reaction temperature, the conversion of xylose was remarkably accelerated in the CO 2 –water–isopropanol system, leading to an acceptable conversion rate (94.41%) and FF yield (55.81%). Addition of an appropriate amount of NaCl further increased the yield to 69.20%. Other carbohydrates (arabinose and xylan) were also tested in the same reaction system and modest results were obtained.
研究领域:
生物化学
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绿色化学
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DOI
高影响因子
RSC Advances
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2019
·Vol. 9
·期 6
·3063-3071
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IF 3.049
Jingxuan Long,Wenfeng Zhao,Yufei Xu,Weibo Wu,Chengjiang Fang,Hu Li,Song Yang
Selective hydrogenation of unsaturated compounds is mainly carried out by using high-pressure hydrogen in the presence of a precious or transition metal catalyst. Here, we describe a benign approach to efficiently catalyze the hydrogenation of furfural (FUR) to furfuryl alcohol (FFA) over commercially available cesium carbonate using nontoxic and cheap polymethylhydrosiloxane (PMHS) as hydrogen source. Good to excellent FFA yields (≥90%) could be obtained at 25–80 °C by appropriate control of the catalyst dosage, reaction time, and the hydride amount. FUR-to-FFA hydrogenation was clarified to follow a pseudo-first order kinetics with low apparent activation energy of 20.6 kJ mol−1. Mechanistic insights manifested that PMHS was redistributed to H3SiMe, which acted as the active silane for the hydrogenation reactions. Importantly, this catalytic system was able to selectively reduce a wide range of aromatic aldehydes to the corresponding alcohols in good yields of 81–99% at 25–80 °C in 2–6 h.
研究领域:
化学工程
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催化化学
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DOI
PubMed
高影响因子
Reaction Chemistry & Engineering
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2025
·
IF 3.1
Liping Luo,Wenxuan Wu,Yanan Shen,Yuheng Tao,Liqun Wang,Qing Qing
High-value valorization of cellulose and hemicellulose fractions in lignocellulosic biomass is crucial for a feasible biomass refinery scheme. In this study, an integrated strategy was developed for pretreatment of corncob and coproduction of furfural and high-concentration fermentable sugars. The hemicellulose fraction in raw corncob was selectively extracted to produce a xylose-rich hydrolysate via pretreatment with dilute p-toluenesulfonic acid (p-TsOH) under optimal reaction conditions (0.5% p-TsOH, 160 °C, and 30 min). Thereafter, the xylose hydrolysate was subjected to catalytic conversion in a DES (TEBAC : LA = 1 : 4) system at 190 °C for 10 min. Notably, 78.6% furfural yield was achieved, and the corresponding xylose conversion was close to 100.0%. In addition, the pretreated corncob residue exhibited excellent enzymatic digestibility as the yields of reducing sugar and glucose were 90.7% and 97.0%, respectively, at a high solid loading of 12%. This proposed approach represents an integrated strategy for coproduction of multiple products from agriculture residues.
研究领域:
生物化学
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可再生资源工程
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DOI
高影响因子
JOURNAL OF POWER SOURCES
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2024
·
IF 8.1
Jia Cheng,Zhiwei Zeng,Xun Huang,Zidong Wei
The electrocatalytic oxidation of furfural (FA) for the production of valuable chemicals, such as 2-furancarboxylic acid (FAC), presents an attractive alternative to the sluggish oxygen evolution reaction during water electrolysis for hydrogen production. However, the activity and stability of the current electrocatalysts still require further enhancement. In this study, NiMoP is fabricated on Ni foam through pulsed electrodeposition to facilitate the electrooxidation of FA for FAC production in an alkaline environment. A low voltage of 1.43 V vs. reversible hydrogen electrode (RHE) is adequate to achieve a current density of 500 mA cm −2 , with FAC selectivity and Faraday efficiency reaching 97.5 % and 95.2 %, respectively. The extended electrolysis of FA using a continuous-flow electrolytic cell under high current density (500 mA cm −2 ) demonstrates consistent stability at a cell voltage around 1.8 V over a 35-h duration.
研究领域:
化学工程
·
电催化
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2019
·
IF 5.107
Yinhua Yang,Zhihao Si,Di Cai,Xingning Teng,Guozhen Li,Ze Wang,Shufeng Li,Peiyong Qin
A high hydrophobicity of membrane plays a vital role in separating organics from dilute solution by pervaporation, which highly contributes to the increase of organics selectivity. Herein, we chose the high-hydrophobic poly[(3,3,3-trifluoropropyl)methylsiloxane] (PTFPMS) material to prepare the pervaporation membrane using a green method for the first time. Within the PTFPMS membrane, the -Si-O- chains imply the hydrophobic nature, and introducing CF 3 groups further enhances the hydrophobicity. The high-efficiency transport pathways are formed in which water will experience a larger diffusion resistance within PTFPMS membrane compared with the conventional polydimethylsiloxane (PDMS) membrane without CF 3 groups. Moreover, considering the great threat of organic solvent to the environment and operators during membrane preparation, a green approach using water instead of organic solvent was employed. Especially, when separating 1 wt% furfural aqueous solution at 80 ℃, there are 30% of increase in the furfural separation factor (45.6) and an effective increase in furfural flux (328 g m −2 h −1 ) compared with those of PDMS membrane. Overall, the super-hydrophobic PTFPMS membrane highly improves the feasibility of the downstream processes for recovering the biomass derives furfural.
研究领域:
材料科学
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环境工程
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产品关联
DOI
高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
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2023
·
IF 5.2
Pai Peng,Yaning Yue,Mengxi Han,Jun Shi,Jing Yang,Junwen Chen,Qiang Chen
Design of heterogeneous catalyst to achieve efficient conversion of biomass to high added-value chemicals is still very attractive. Herein, taking industrially important selective hydrogenation of furfural to furfuryl alcohol as an example, the designed amorphized HA zeolite encapsulation of platinum clusters (denoted as Pt@HA) exhibited excellent catalytic selectivity at totally conversion of the reactant furfural, along with good reusability and poison resistance ability. The selected amorphized HA zeolite with very small pore size constrained the reactant furfural to be reacted through hydrogen spillover process at zeolite surface, instead of to be adsorbed and activated onto Pt surface. Resulting from the stronger interaction between nucleophilic oxygen atom of aldehyde group and acid site at HA zeolite surface than that of furan ring group, furfural preferred to adsorb onto Pt@HA surface with the end of aldehyde group rather than the end of furan ring group, thus facilitating the spilled H atom to react with aldehyde group to give desired furfuryl alcohol product exclusively.
研究领域:
催化化学
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生物质转化
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材料科学
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产品关联
DOI
高影响因子
Molecular Catalysis
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2021
·
IF 5.062
Tao Yang,Wenzhi Li,Ajibola T. Ogunbiyi
This study was focused on investigating a novel catalytic system for the selective conversion of furfural to maleic acid (MA) in an aqueous system with hydrogen peroxide as an oxidant. A series of experiments that study the impacts of catalyst species, furfural concentration, catalyst dosage, reaction temperature, residue time, hydrogen peroxide concentration, excess water content, and solvent types on the oxidation of furfural to MA was carried out. The results showed that the co-existence of Br- and alkali sites might play a vital role in furfural oxidation, which could improve the MA yield remarkably. Under 90 °C for 3 h, 72.4 % MA yield was obtained with KOH and KBr as co-catalyst in an aqueous phase. Moreover, a possible reaction pathway of furfural oxidation was proposed on the basis of our reaction system.
研究领域:
化学工程
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催化反应
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2015
·
IF 4.321
Qian Yao,Lujiang Xu,Zheng Han,Ying Zhang
Furfural, an abundant biomass derived compound, was converted into indoles via thermo-catalytic conversion and ammonization with zeolites. The effect of reaction temperature, catalyst, weight hourly space velocity (WHSV) and ammonia to furfural molar ratio on the product distribution was investigated systematically. They all played important roles on indoles production. The maximal carbon yield of indoles (20.79%) was achieved by using HZSM-5 (Si/Al = 25) catalyst at 650 °C with WHSV as 1.0 h −1 and NH 3 to furfural molar ratio as 2. The HZSM-5 (Si/Al = 25) catalyst was recycled for five times and showed slight deactivation. Three possible aldehyde group of furfural conversion pathways were proposed and one possible reaction pathway from furfural to indoles was verified based on the experimental and quantum calculation results, that is, furfural firstly reacted with ammonia to form furfural-imine, and then furfural-imine underwent a cracking reaction to form furan. Thereafter, furan was converted to pyrrole and finally to indoles.
研究领域:
生物化学
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催化化学
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产品关联
DOI
高影响因子
Molecular Catalysis
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2017
·
IF 0
Wanbing Gong,Chun Chen,Haimin Zhang,Yong Zhang,Yunxia Zhang,Guozhong Wang,Huijun Zhao
In this work, N-doped activated carbon supported metallic nickel (Ni/NAC) catalysts were fabricated by two-step calcination method in N 2 atmosphere for liquid-phase hydrogenation of furfural (FAL). It was found that the pyrolysis temperature and amount of melamine as N doping source have important influence on N doping content and type in activated carbon (AC) support, resulting in the subsequently formed Ni nanoparticles on N-doped AC with different sizes and thus affording different catalytic hydrogenation activities. The results demonstrated that using N-doped AC with 1.0 g melamine at 1073 K in N 2 atmosphere as support, the obtained Ni/NAC at 873 K in N 2 atmosphere with Ni nanoparticle sizes of ∼13.1 nm (denoted as Ni/NAC-1-1073) exhibits a N doping content of 3.65 at.% and a surface area of 561.2 m 2 g −1 with a microporous structure. As catalyst for FAL hydrogenation, Ni/NAC-1-1073 demonstrated the best catalytic performance among all investigated catalysts, achieving almost 100% selectivity of tetrahydrofurfuryl alcohol (THFOL) with a complete FAL conversion at 353 K after 3 h reaction, while only 76.7% selectivity of THFOL with a FAL conversion of 86.4% was obtained using Ni/AC catalyst without N doping under the identical experimental conditions. Furthermore, it was found that almost 100% conversion of FAL to furfural alcohol (FOL) can be reached by transfer hydrogenation pathway in 2-proponal solvent using Ni/NAC-1-1073 at 413 K after 5 h reaction, whereas Ni/AC without N doping can only afford 30.2% conversion of FAL to FOL under the same conditions. The superior catalytic performance of Ni/NAC-1-1073 could be ascribed to a synergistic effect of nanosized Ni providing catalytic active sites, suitable N doping content and type in AC to promote catalytic performance, and advantageous structure characteristics of high surface area and porous structure favourable for the exposure of catalytic active sites and mass transport.
研究领域:
催化化学
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材料科学
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可再生能源
✓ 已验证
产品关联
DOI
危险品化学品经营许可证（带存储）