A biphasic system, consisting of methyl isobutyl ketone and H2O, has been achieved for a highly integrated one-pot catalytic transformation delignification process lignocellulosic biomass. Using SO3H-functionalized ionic liquids as catalysts, 85.8% bagasse can be fractionated into 71.4% water-soluble chemicals at 76.3% lignin extraction ratio, under the optimized conditions. The practicability this system other typical biomass sources also tested with high efficiency, viz., 79.6 to 91.9%...

N-Doped mesoporous carbons (NMCs) with extra framework magnesium were prepared by a one-pot method and used as supports for Pt catalysts. The surface basicity of NMC improved in the presence (e.g., -Ph-O-Mg), meanwhile, electron density was enriched transfer from graphitic N to Pt. As result, catalytic activity supported catalyst be able selectively oxidize glycerol (GLY) tartronic acid (TA) under base-free conditions.

Abstract This study aims to develop a process control strategy for the acid gas sweetening based on dynamic simulation, disturbances of ±5 % are introduced in terms flowrate and composition. The stability controllability system evaluated using indicators such as integral absolute error ( IAE ) deviation heat duty ∆Q ). results demonstrate that composition‐ratio scheme absorption section combines advantages fast response from ratio calculation precise composition control. Accordingly,...

A series of organic sulfonate inner salts, viz., aprotic imidazolium- and pyridinium-based zwitterions bearing groups (-SO3-), were synthesized for the catalytic conversion fructose-based carbohydrates into 5-hydroxymethylfurfural (HMF). The dramatic cooperation both cation anion salts played a crucial role in HMF formation. have excellent solvent compatibility, 4-(pyridinium)butane (PyBS) affords highest activity with 88.2 95.1% yields at almost full fructose low-boiling-point protic...

A biomass-based catalyst with amine groups (–NH2), viz., amine-functionalized sugarcane bagasse (SCB-NH2), was prepared through the amination of (SCB) in a two-step process. The physicochemical properties were characterized FT-IR, elemental analysis, XRD, TG, and SEM-EDX techniques, which confirmed –NH2 group grafted onto SCB successfully. catalytic performance SCB-NH2 Knoevenagel condensation reaction tested batch continuous flow reactions. Significantly, it found that is better system than...

The carbohydrate-derived 5-hydroxymethylfurfural (HMF) is one of the most versatile intermediate chemicals, and promising to bridge growing gap between supply demand energy chemicals. Developing a low-cost catalytic system will be helpful production HMF in industry. Herein, commercially available lithium chloride (LiCl) isopropanol (i-PrOH) are used construct cost-effective low-toxic system, viz., LiCl/i-PrOH, for preparation from fructose-based carbohydrates, achieving ∼80% yield under...

A facile and eco-friendly system for synthesis of 5-hydroxymethylfurfural (HMF) from glucose has been investigated with the catalyst dihydric phosphate (H2PO4—) in a methyl isobutyl ketone (MIBK)/H2O biphasic system. The results showed that dosage, reaction temperature, time had noticeable effects on conversion HMF yield; more than 50% yield was achieved at optimum conditions. In addition, this catalytic broadly substrate-tolerant; satisfactory obtained higher substrate concentrations...

Abstract An eco‐friendly catalytic system consisted of dihydric phosphate (H 2 PO 4 — ) catalyst and a methyl isobutyl ketone (MIBK)/H O biphasic solvent has been constructed to produce 5‐hydroxymethylfurfural (HMF) from sucrose, cheaper more widely available feedstock than fructose. The effects reaction conditions, viz ., dosage, temperature, time, on this dehydration have investigated systematically, affording 70% HMF yield under the optimum conditions. This environmentally friendly is...

Abstract A highly efficient intermolecular mutual addition of aromatic aldehydes with ethyl acrylate was developed by using tris(4-methoxylphenyl)phosphine as the catalyst. The reaction corresponds to construction 1,4-dicarbonyl compound and allylic alcohol fragments, which also provides a new way form C-C bond.

Abstract The commercially available sodium carboxymethylcellulose (CMC−Na) has been used as a low‐cost catalyst for Knoevenagel condensation reaction under solvent‐free condition at room temperature. results show that CMC−Na is robust enough to catalyze reactions of series aldehydes containing electron‐donating and electron‐withdrawing groups with malononitrile produce the corresponding products good excellent yields. This catalytic efficiency can be attributed peculiar capacity carboxylate...

A series of chloro-functionalized ionic liquids (CFILs) with chlorine groups (–Cl) on cations and chloride anions (Cl-) were synthesized used as the promotion reagents for selective conversion cellulose into levulinic acid (LA) co-product formic (FA). The co-operation between CFILs was investigated intensively through variation structure addition salts different anions. 3-(3-chloropropyl)-1-methyl-imidazolium (IL-3) most appropriate additive, achieving up to 4.2%, 52.6%, 58.7% glucose, LA,...

The regulation of catalyst morphology and the electronic structure active components are effective means to improve oxidation performance alcohols. In this work, Pd nanoparticles were loaded on supports containing different cations (NiFe(OH)2, NiCo(OH)2, Ni(OH)2) using electrodeposition method achieve interaction between support structure, as well design morphology, thereby enhancing electrocatalytic glycerol oxidation. results shows that Pd/NiCo(OH)2 nanorods array exhibited a superior...

Abstract An efficient and rapid access to various 1,4‐dicarbonyl compounds allylic alcohol derivatives from readily available starting materials under mild reaction conditions is presented.

Analcime was hydrothermally synthesized for the first time by using sea sand as silica source. Sea treated HNO3 and NaOH respectively. The pretreated used to synthesize analcime with different ratio of Si/Al. as-prepared samples particle size from 40 50 μm exhibit isometric trapezohedral morphology uniform. results indicate that crystalline can be prepared an economic raw material.