Category: 1589-47-5

Mathieu, Didier published the artcilePower Law Expressions for Predicting Lower and Upper Flammability Limit Temperatures, Synthetic Route of 1589-47-5, the publication is Industrial & Engineering Chemistry Research (2013), 52(26), 9317-9322, database is CAplus.

By analogy with recent models for flash point, the lower and upper flammability limit temperatures of organic compounds are represented as power law expressions in terms of fragment contributions. The predictive value of the resulting models compares well with recently published methods. A major advantage of the present approach is the fact it provides better insight into the relations between flammability limit temperatures and mol. structure.

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, Synthetic Route of 1589-47-5.

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

Zhang, Miao published the artcileKinetics simulation of propylene epoxidation over different Ti species in TS-1, Application In Synthesis of 1589-47-5, the publication is AIChE Journal (2021), 67(8), e17261, database is CAplus.

A thorough exptl. investigation on the kinetic behavior of liquid-phase propylene epoxidation over TS-1 and tetrapropylammonium hydroxide (TPAOH) treated TS-1 catalysts was conducted in a fixed-bed reactor. The amounts of different coordinated Ti species in the catalysts were quantified by spectroscopies, and their catalytic performances of the epoxidation and alcoholysis of propylene oxide were measured by kinetic modeling. The study shows that the TPAOH treatment converted some of the tetrahedrally coordinated Ti to octahedrally coordinated Ti, and both species were active for the epoxidation and alcoholysis. The superior catalytic performance observed over the TPAOH treated TS-1 is due to two factors, the increased percentage of active sites, and reduced energy barrier for epoxidation on the octahedrally coordinated Ti. In addition, as the H₂O₂ conversion increases, the adsorption equilibrium constant of propylene oxide plays a more decisive role than the activation energy for the selectivity of propylene glycol monomethyl ethers.

AIChE Journal 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 C4H8Cl2S2, Application In Synthesis of 1589-47-5.

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

Ou, Jiamin published the artcileSpeciated OVOC and VOC emission inventories and their implications for reactivity-based ozone control strategy in the Pearl River Delta region, China, SDS of cas: 1589-47-5, the publication is Science of the Total Environment (2015), 393-402, database is CAplus and MEDLINE.

Increasing ground-level O₃ concentrations, accompanied by decreasing SO₂, NO₂, PM₁₀, and PM_2.5 concentrations due to recently implemented air pollution control measures, initiated a serious challenge to control volatile organic compound (VOC) emissions in the Pearl River Delta (PRD) region, China. A speciated VOC emission inventory is fundamental to estimate O₃ formation potential (OFP) and identify key reactive VOC species and sources to formulate efficient O₃ control strategies. Using the latest bulk VOC emission inventory and local source profiles, this work developed PRD regional speciated oxygenated VOC (OVOC) and VOC emission inventories to identify key emission-based and OFP-based VOC sources and species. Results showed: Me alc., acetone, and Et acetate were major constituents in OVOC emissions from industrial and household solvents, architectural paints, and biogenic sources; from an emission-based perspective, aromatics, alkanes, OVOC, and alkenes comprised 39.2, 28.2, 15.9, and 10.9% of anthropogenic VOC; from an OFP-based perspective, aromatics and alkenes were predominant with contributions of 59.4 and 25.8% resp.; ethene, m/p-xylene, toluene, 1,2,4-tri-Me benzene, and other high OFP-contributing compounds were key reactive species contributing up to 52% of anthropogenic emissions and up to 80% of OFP; and industrial solvents and processes, gasoline-fueled vehicles and motorcycles were major emission sources of these key reactive species. Policy implications for O₃ control strategy are discussed. An OFP cap was proposed to regulate VOC control policies in the PRD due to its flexibility in reducing overall VOC emission source VOC in practice.

Science of the Total Environment 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, SDS of cas: 1589-47-5.

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

Xu, Yueting published the artcileHydrogen bonding-catalyzed alcoholysis of propylene oxide at room temperature, Category: ethers-buliding-blocks, the publication is Chemical Communications (Cambridge, United Kingdom) (2021), 57(70), 8734-8737, database is CAplus and MEDLINE.

Alcoholysis of propylene oxide (PO) was achieved over azolate ionic liquids (IL, e.g., 1-hydroxyethyl-3-Me imidazolium imidazolate) at room temperature to access glycol ethers R¹OCH₂CHOHR² [R¹ = Me, Et, iPr, etc.; R² = Me, Et] in high yields with excellent selectivity (e.g., >99%). Mechanism investigation indicated that cooperation of hydrogen-bonding of the anion with methanol and that of the cation with PO catalized the reaction. This catalytic protocol was simple, green, highly efficient and might had promising applications in the production of glycol ethers.

Chemical Communications (Cambridge, United Kingdom) 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 C25H23NO4, Category: ethers-buliding-blocks.

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

Wu, Lizhi published the artcileIn-depth understanding of acid catalysis of solvolysis of propene oxide over titanosilicates and titanosilicate/H₂O₂ systems, Recommanded Product: 2-Methoxypropan-1-ol, the publication is Journal of Catalysis (2016), 248-259, database is CAplus.

A comprehensive investigation was carried out to understand the acidic nature of titanosilicates and titanosilicate/H₂O₂ catalytic systems. According to a typical probe reaction, the ring opening of propylene oxide (PO) with CH₃OH and H₂O based on the side reaction in the hydrogen peroxide-propylene oxide (HPPO) process, as well as on the characterization of the IR spectrum, four types of acid sites were confirmed and their alcoholysis ability decreased in the order Ti-OOH > Si-OH groups generated by defect sites ≫ tetrahedral Ti⁴⁺ centers ≈ Ti-OH. The Bronsted acid sites (BAS) of the Si-OH groups generated by defect sites and the Ti-OOH species should be mainly responsible for the ring opening of epoxides. Meanwhile, the alcoholysis products ratio of 1-methoxy-2-propanol (PPM) to 2-methoxy-1-propanol (SPM) was demonstrated to be correlated with the specific acid sites for the first time: BAS tend to generate SPM, while Lewis acid sites (LAS) of tetrahedral Ti⁴⁺ centers tend to form PPM. It is found that the reaction activation energy of alcoholysis is higher than that of hydrolysis, since hydrolysis could proceed directly without acid sites. Fine ion exchange and proper additives were adopted to suppress corresponding specific acid sites, which could obviously enhance the PO selectivity in propylene epoxidation

Journal of 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 C7H8BFO2, Recommanded Product: 2-Methoxypropan-1-ol.

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

Liu, Chun published the artcileLow pressure one-pot synthesis of dimethyl carbonate catalyzed by an alkali carbonate, Safety of 2-Methoxypropan-1-ol, the publication is Cuihua Xuebao (2015), 36(7), 1136-1141, database is CAplus.

A mild and efficient protocol for the alkali carbonate-catalyzed one-pot synthesis of di-Me carbonate (DMC) from epoxide, CO₂ and methanol was developed. The reaction conditions for the one-pot synthesis of DMC were investigated. Under the optimized conditions of initial pressure 0.5 MPa, 120 degree and catalyst loading of 7.5 mol%, 63.5% yield of DMC was achieved using ethylene oxide as the starting material. A mechanism for the catalysis by the alkali carbonate was proposed.

Cuihua Xuebao 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, Safety of 2-Methoxypropan-1-ol.

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

Chen, Shengxin published the artcileEpoxide ring-opening reaction promoted by ionic liquid reactivity: interplay of experimental and theoretical studies, Recommanded Product: 2-Methoxypropan-1-ol, the publication is Catalysis Science & Technology (2019), 9(20), 5567-5571, database is CAplus.

Ionic liquids (ILs) have been widely introduced recently into the epoxide ring-opening reaction as catalysts or solvent without considering the chem. stability of ILs in propylene oxide (PO). Through a combination of electrospray-ionization quadrupole time-of-flight mass spectrometry (ESI-QTOF-MS) investigations and quantum-chem. calculations, we demonstrate that AC- (acetate) and MC-(Me carbonate) based ILs exhibit modified activity for ring opening of PO compared with the reaction between ILs and epoxide compounds The chem. unstable ILs and the solvent effect can also dominate the catalytic performance of the coupling reaction of PO with methanol. Based on these findings, we further design the reaction process for highly efficient synthesis of propylene glycol Me ether, in which the yield of the main product increased more than 40% under the same ILs catalysts. The results explained how the chem. instability and substrate affected the PO coupling reaction and further controlled it.

Catalysis Science & Technology 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

Rahmatpour, Ali published the artcileMBA-cross-linked poly(N-vinyl-2-pyrrolidone)/ferric chloride macromolecular coordination complex as a novel and recyclable Lewis acid catalyst: Synthesis, characterization, and performance toward for regioselective ring-opening alcoholysis of epoxides, Recommanded Product: 2-Methoxypropan-1-ol, the publication is Reactive & Functional Polymers (2021), 105032, database is CAplus.

A novel macromol.-metal coordination complex, MBA-cross-linked PNVP/FeCl₃ material was fabricated by immobilization of water intolerant ferric chloride onto the porous cross-linked poly(N-vinyl-2-pyrrolidone) carrier beads as a macromol. ligand or carrier which was prepared by suspension free-radical copolymerization of N-vinyl-2-pyrrolidone (NVP) and N,N’-methylene bis-acrylamide (MBA) as a crosslinking agent in water. The obtained PNVP/FeCl₃ was characterized by UV/vis and FT-IR spectroscopies, TGA, FE-SEM, EDX, and ICP techniques. This heterogenized version of ferric chloride is a convenient and safe alternative to highly water intolerant ferric chloride. The catalytic performance of (PNVP/FeCl₃) as an efficient and recyclable polymeric Lewis acid catalyst was appropriately probed in the regio-and stereoselective nucleophilic ring opening of various epoxides with various alcs. in excellent yields with TOF up to 182.48 h^-1 without generating any waste. The activity data indicate that this heterogeneous catalyst is very active and could be easily recovered, and reused at least six times without appreciable loss of activity indicating its stability under exptl. conditions.

Reactive & Functional Polymers 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

Bagheri, Mehdi published the artcileMolecular modeling of the standard state heat of formation, SDS of cas: 1589-47-5, the publication is Energy Conversion and Management (2013), 587-596, database is CAplus.

The standard heat of formation is a basic thermophys. property required in determining enthalpies of reaction and in thermodn. stability analyses. Further, the enthalpies of formation are important in investigating bond energies, resonance energies and the nature of chem. bonds. Therefore, the development of accurate structure-based estimation methods for large varieties of chem. species is greatly beneficial in enhancing capability in process and product development. In this work, quant. structure-property relationship (QSPR) models were developed for a structurally diverse DIPPR dataset of standard heats of formation comprising 1765 pure compounds involving 82 chem. classes. We have employed both linear and nonlinear QSPR modeling techniques. The linear approach involves the use of constricted binary particle swarm optimization (BPSO) for feature selection and multiple-linear regression. In the nonlinear approach, the optimum network architecture and its associated inputs are identified using a wrapper-based feature selection algorithm combining differential evolution and artificial neural networks. Model predictions for the root-mean-square error of the BPSO and nonlinear approaches were 138 and 97 kJ/mol, resp.

Energy Conversion and Management 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, SDS of cas: 1589-47-5.

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

Lin, Min published the artcileGreen and efficient epoxidation of propylene with hydrogen peroxide (HPPO process) catalyzed by hollow TS-1 zeolite: A 1.0 kt/a pilot-scale study, Safety of 2-Methoxypropan-1-ol, the publication is Chemical Engineering Journal (Amsterdam, Netherlands) (2016), 370-375, database is CAplus.

The propylene epoxidation catalyzed by hollow TS-1 zeolite with 30 wt% H₂O₂ solution as oxidant at 1.0 kt/a pilot plant has been examined Rising reaction temperature is in favor of increasing TOF of H₂O₂ but reduces the selectivity of PO, due to the promotion of major and side reactions at the same time. Enhancing the CH₃OH amount and the WHSV of H₂O₂ is preferential to improving the TOF of H₂O₂ and the selectivity of PO, but increase capital and energy consumption as well. Taking all into consideration, the optimized epoxidation has been confirmed: T is 40-50 °C; molar ratio of CH₃OH/H₂O₂ is 5-15, and the WHSV of H₂O₂ is more than 1.2 h^-1. When the epoxidation of propylene carried out over 6000 h, the TOF of H₂O₂ is 30.9-32.2 mmol g^-1 h^-1 and the PO selectivity is 96-99%, resp. The final PO product from this plant is at 99.97% purity, which has been used as an intermediate to synthesize kinds of chems.

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, Safety of 2-Methoxypropan-1-ol.

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