Copper and zinc were introduced into mesoporous siliceous matrices with the goal of obtaining model methanol synthesis catalysts with intense interaction between copper and the ZnO promoter. The preparation methods included various aqueous routes starting from acetate solutions (into MCM-48) and a route involving an organometallic step—thermolysis of a liquid heterocubane of Zn4O4 type ([CH3ZnO...

In heterologous protein productions by P. pastoris, methanol induction is generally initiated when cell concentration reaches very high density. The alternative strategy by initiating methanol induction at lower cells concentration was also reported to be effective in easing DO control, reducing toxic by-metabolites accumulation and increasing targeted proteins titers. However, the methanol/ene...

Previous experiments from this Laboratory with C4-methanol demonstrated that the carbon of methanol becomes incorporated into the methyl group of choline in the rat (1). This observation has been confirmed by Arnstein (2). In a subsequent investigation carried out in this Laboratory with methanol doubly labeled in the methyl group with deuterium and C14, it was found that less than one-third of...

Synthesis of Silver Nanoparticles using Methanol Extract Bunium Persicum and the Evaluation its Cytotoxic, Antileishmanial, Antimicrobial Activities

In the first part of two section paper, a mathematical model of the fluidized bed reactor in the presence of in-situ water adsorbent for methanol synthesis is assessed. The bubbling two-phase regime is applied to model the fluidization concept. The binary adsorbent and catalyst particles system can be separated from each other based on their density difference. The heavy catalyst particles tend...

Detailed modeling of the methanol synthesis combining theoretical surface kinetics, catalyst structural changes, and a broad experimental validation.

A microfluidic reactor enabled continuous co-precipitation synthesis of CuO/ZnO/Al 2 O 3 catalysts for methanol production.

Formation of adamantane hydrocarbons and their confinement in SAPO-34 caused the long induction period and the quick catalyst deactivation in methanol conversion. Via ship-in-a-bottle synthesis, adamantane and methyladamantanes could be produced from methanol conversion in the cage of 8-ring SAPO catalysts under very mild reaction conditions.

The 480-kDa corrinoid protein was significantly methylated in extracts of acetate- but not methanol-grown cells incubated with 14CH3OH, in part because of its decreased synthesis in cells grown on substrates other than acetate. In addition, a 200-kDa corrinoid protein was methylated in extracts of methanol- but not acetate-grown cells.

We use density functional theory (DFT) calculations to investigate the mechanism of CO2 hydrogenation to methanol on a reduced ceria (110) catalyst, which has previously been shown to activate CO2. Two reaction channels to methanol are identified: (1) COOH pathway via a carboxyl intermediate and (2) HCOO pathway via a formate intermediate. While formaldehyde (H2CO) appears to be the key interme...