Category: 1589-47-5

Shin, Sang Baek published the artcileThe effects of impregnation of precious metals on the catalytic activity of titanium silicate (TS-1) in epoxidation of propene using hydrogen peroxide, SDS of cas: 1589-47-5, the publication is Journal of Molecular Catalysis A: Chemical (2016), 478-488, database is CAplus.

Propene oxide is an important chem. intermediate and titanium silicalite (TS-1) has been widely investigated as a promising catalyst for the direct epoxidation of propene with ex-situ or in-situ produced hydrogen peroxide as an oxidant. In order to clarify the effects of the kind of precious metal and treatment process in the catalyst preparation on the propene epoxidation and the hydrogen peroxide decomposition, TS-1 was impregnated with gold and palladium via drying, calcination and reduction and the experiments to check its catalytic performance were conducted in a gas aspirating autoclave reactor in the absence of mass transfer limitations. The presence of precious metals vigorously catalyzed the side reactions and hydrogen peroxide decomposition Some of the precious metal containing TS-1 catalysts showed high initial rates but there was no catalyst with a propene oxide yield after 5 h reaction time comparable to TS-1 alone because of the enhancement of side reactions by precious metals. The significant decline in the selectivity to propene oxide over the dried precious metal containing TS-1 catalysts was attributed to the leaching of precious metals into the reaction medium. Palladium containing TS-1 showed exceptionally high decomposition of hydrogen peroxide. Reduction and calcination increased the decomposition by forming metallic gold and palladium. Homogeneous dispersion of gold nanoparticles was achieved by a sol immobilization method which led to a decrease of propene oxide selectivity and an increase of hydrogen peroxide decomposition

Journal of Molecular Catalysis A: Chemical published new progress about 1589-47-5. 1589-47-5 belongs to ethers-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Alcohol,Ether, name is 2-Methoxypropan-1-ol, and the molecular formula is C11H24O3, SDS of cas: 1589-47-5.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Timofeeva, Maria N. published the artcileA layered titanosilicate AM-4 as a novel catalyst for the synthesis of 1-methoxy-2-propanole from propylene oxide and methanol, Related Products of ethers-buliding-blocks, the publication is Applied Catalysis, A: General (2019), 117240pp., database is CAplus.

In this paper we report for the first time the catalytic properties of the titanosilicate AM-4 in the synthesis of 1-methoxy-2-propanol (PGME) from methanol and propylene oxide (PO). PGME is widely used as a pollution-free solvent and intermediate in the synthesis of propylene glycol Me ether acetate, the herbicide metolachlor and in other industrial applications. We found that the catalytic properties of AM-4 could be adjusted by treatment with 0.0625-0.25 M HNO₃. Increasing the concentration of HNO₃ led to a decrease in basicity, which played a critical role in the reaction rate and the selectivity toward PGME. The yield of PGME decreased with increased acid concentration The maximum conversion of PO (88.4%) and the selectivity toward PGME (92.3%) were found to be in the presence of AM-4 at 110 °C and 8 mol/mol MeOH/PO. Our results suggest that titanosilicate AM-4 has great potential for application in basic catalysis.

Applied Catalysis, A: General published new progress about 1589-47-5. 1589-47-5 belongs to ethers-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Alcohol,Ether, name is 2-Methoxypropan-1-ol, and the molecular formula is C16H20N2, Related Products of ethers-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Kertalli, E. published the artcileDirect synthesis of propylene oxide in a packed bed membrane reactor, Recommanded Product: 2-Methoxypropan-1-ol, the publication is Chemical Engineering Journal (Amsterdam, Netherlands) (2017), 9-14, database is CAplus.

In the present work, the direct synthesis of propylene oxide (PO) in the liquid phase is successfully performed in a packed bed membrane reactor. We show that this engineering device can be implemented under mild reaction conditions (low temperature and pressure) and outside the explosive regime (low hydrogen concentration), making it appealing for industrial applications. The ceramic membrane allows for a sep. feed of the reactants, therefore addressing the PO selectivity issue related to the propylene hydrogenation. The reaction is operated in a continuous methanol flow fed with propylene inside the tubular membrane; hydrogen and oxygen are fed through the porous material. We observe that the feeding strategy of the reactants has an important effect on key parameters such as PO selectivity and productivity. By separating propylene from hydrogen, the propane formation was reduced with respect to conventional packed bed reactors. Moreover, the addition of small amounts of NaBr to the reaction medium increases the catalytic activity to PO, but also to propane formation. Therefore, this study provides a good starting point in the design of a membrane reactor device for the direct synthesis of PO where the main limitations such as propylene hydrogenation and water formation can be addressed.

Chemical Engineering Journal (Amsterdam, Netherlands) published new progress about 1589-47-5. 1589-47-5 belongs to ethers-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Alcohol,Ether, name is 2-Methoxypropan-1-ol, and the molecular formula is C4H10O2, Recommanded Product: 2-Methoxypropan-1-ol.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Liu, Ming published the artcileThe role of Zn in the sustainable one-pot synthesis of dimethyl carbonate from carbon dioxide, methanol and propylene oxide, Formula: C4H10O2, the publication is Chemical Engineering Science (2021), 116267, database is CAplus.

Di-Me carbonate (DMC) can be applied as a greener alternative to more hazardous materials, e.g. phosgene or di-Me sulfate. Herein, one-pot synthesis of DMC from propylene oxide, methanol and CO₂ using alkali halide catalysts under mild conditions was studied. Addition of Zn powder to the K₂CO₃-NaBr- MgZnO catalyst system was seen to increase DMC selectivity from 19.8% (TOF = 39.0 h^-1) to 40.2% (TOF = 78.1 h^-1) at 20 bar and 160°C for 5 h. Catalyst characterization showed that Zn powder increases the stability of the catalyst, preventing the active ingredients on the catalyst surface from leaching. An increase in propylene oxide conversion to DMC is attributed to the increase of Zn²⁺ ions in the reaction solution Elevated pressure was not found to be a necessary reaction condition for transesterification. This study shows that increased selectivity to DMC can be achieved at mild conditions with the addition of Zn powder.

Chemical Engineering Science published new progress about 1589-47-5. 1589-47-5 belongs to ethers-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Alcohol,Ether, name is 2-Methoxypropan-1-ol, and the molecular formula is C4H10O2, Formula: C4H10O2.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Reinisch, Jens published the artcilePredicting Flash Points of Pure Compounds and Mixtures with COSMO-RS, Related Products of ethers-buliding-blocks, the publication is Industrial & Engineering Chemistry Research (2015), 54(51), 12974-12980, database is CAplus.

Flash point (FP) is an important parameter to assess chem. compound safety. Many empirical approaches have been developed to predict FP based on mol. structure, sometimes involving a large number of descriptors and resulting in class-specific equations. This work demonstrated that a satisfying, rather general prediction of saturation pressure at the FP can be achieved using only mol. surface area. This relation in conjunction with any exptl. or computational method to calculate temperature-dependent vapor pressures allows for the FP predictions. In a second step, chem. mixture FP were calculated using COSMO-RS activity coefficients Using the proposed method, FP were calculated without needing data typically generated in experiments (normal b.p., combustion enthalpy), although exptl. pure-compound FP and vapor pressure data can still be used to increase prediction quality.

Industrial & Engineering Chemistry Research published new progress about 1589-47-5. 1589-47-5 belongs to ethers-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Alcohol,Ether, name is 2-Methoxypropan-1-ol, and the molecular formula is C4H10O2, Related Products of ethers-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Timofeeva, Maria N. published the artcileSynthetic and natural materials with the brucite-like layers as high active catalyst for synthesis of 1-methoxy-2-propanol from methanol and propylene oxide, Quality Control of 1589-47-5, the publication is Journal of Molecular Catalysis A: Chemical (2016), 22-30, database is CAplus.

The aim of this study was to investigate the correlation between the basic and catalytic properties of brucite and Mg,Al-layered double hydroxides (Mg,Al-LDHs) in the reaction of propylene oxide with methanol. The basic properties of the solids were investigated by FT-IR spectroscopy using CDCl₃ as probe mol. and Hammett acidity titration with n-butylamine and benzoic acid. Both the increase in the activation temperature and the decrease in Al content favored the increase in the basicity of Mg,Al-LDH. The nature of “Mⁿ⁺-O^2- Lewis acid-ba se” pairs was a key factor to control the catalytic behavior of the solids. The length of the M-O bond, the basicity of the oxygen ion and the strength of the metal ion on the surface affected the catalytic activity of the solids and their isomer selectivity in the reaction between methanol and propylene oxide to form 1-methoxy-2-propanol. It was demonstrated that brucite(150) can be applied as catalyst for at least four successive cycles without loss of activity.

Journal of Molecular Catalysis A: Chemical published new progress about 1589-47-5. 1589-47-5 belongs to ethers-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Alcohol,Ether, name is 2-Methoxypropan-1-ol, and the molecular formula is C4H6O3, Quality Control of 1589-47-5.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Rasu, Loorthuraja published the artcileHighly Enantioselective Hydrogenation of Amides via Dynamic Kinetic Resolution Under Low Pressure and Room Temperature, Recommanded Product: 2-Methoxypropan-1-ol, the publication is Journal of the American Chemical Society (2017), 139(8), 3065-3071, database is CAplus and MEDLINE.

High-throughput screening and lab-scale optimization were combined to develop the catalytic system trans-RuCl₂((S,S)-skewphos)((R,R)-dpen), 2-PrONa, and 2-PrOH. This system hydrogenates functionalized α-phenoxy and related amides at room temperature under 4 atm H₂ pressure to give chiral alcs. with up to 99% yield and in greater than 99% enantiomeric excess via dynamic kinetic resolution

Journal of the American Chemical Society published new progress about 1589-47-5. 1589-47-5 belongs to ethers-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Alcohol,Ether, name is 2-Methoxypropan-1-ol, and the molecular formula is C4H10O2, Recommanded Product: 2-Methoxypropan-1-ol.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Xu, Wenshuai published the artcileOne-pot synthesis of dimethyl carbonate over basic zeolite catalysts, Application In Synthesis of 1589-47-5, the publication is Modern Research in Catalysis (2013), 2(2A), 22-27, database is CAplus.

One-pot synthesis of di-Me carbonate (DMC) from methanol, propylene oxide (PO) and carbon dioxide has been investigated using the basic zeolites as catalysts. Among the zeolites studied, Beta showed the best catalytic performance for DMC production That the desilication of zeolite structure resulted in a hierarchical porosity of Beta, leading to more amount of KOH can be loaded on the surface of zeolite and therefore enhancing the base strength of the catalyst was proposed to be the reason for improved catalytic performance.

Modern Research in Catalysis published new progress about 1589-47-5. 1589-47-5 belongs to ethers-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Alcohol,Ether, name is 2-Methoxypropan-1-ol, and the molecular formula is C17H14F3N3O2S, Application In Synthesis of 1589-47-5.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Wilson, Loren C. published the artcileDIPPR Project 851 – Thirty Years of Vapor-Liquid Critical Point Measurements and Experimental Technique Development, Recommanded Product: 2-Methoxypropan-1-ol, the publication is Journal of Chemical & Engineering Data (2018), 63(9), 3408-3417, database is CAplus.

Exptl. determined critical temperatures (T_c) and critical pressures (P_c) are reported for 64 compounds In addition, the critical volume (V_c) has been exptl. determined for 14 of these compounds The compounds in this study are of industrial interest in process design, simulation, and safety. These data also extend our understanding of and ability to predict these properties from group contribution methods.

Journal of Chemical & Engineering Data published new progress about 1589-47-5. 1589-47-5 belongs to ethers-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Alcohol,Ether, name is 2-Methoxypropan-1-ol, and the molecular formula is C16H18O4, Recommanded Product: 2-Methoxypropan-1-ol.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Permana, Yessi published the artcileRing-opening of oxiranes using taeniolite-supported tris(β-diketonato)zirconium, Application of 2-Methoxypropan-1-ol, the publication is ITB Journal of Science (2012), 44A(3), 263-274, database is CAplus.

Tris(β-diketonato)zirconium(IV) complexes were immobilized into a synthetic clay structure of Taeniolite by an ion-exchange method to generate organic/inorganic hybrid compounds The hybrid compound served as a good catalyst for ring-opening reactions of Me, Et, and di-Me oxiranes with various alcs. to generate primary alkoxy alcs. in appreciable selectivity. This method describes a technique to immobilize cationic zirconium complexes without losing selectivity.

ITB Journal of Science published new progress about 1589-47-5. 1589-47-5 belongs to ethers-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Alcohol,Ether, name is 2-Methoxypropan-1-ol, and the molecular formula is C4H10O2, Application of 2-Methoxypropan-1-ol.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem