Excess CO Reductions during CH COOH Formation from CH and CO under Periodic Operation: Downhill Side Reactions in an Uphill Target Reaction under Unsteady Conditions.

Acetic acid (CH COOH) formation from methane (CH ) and carbon dioxide (CO ) is an ideal reaction for chemical production, whereas this reaction possesses a severe thermodynamic limitation. To address this issue, it has been reported that periodic operation allowing a non-equilibrium condition can overcome the thermodynamic limitation. However, although an intrinsic issue of uphill reactions in non-equilibrium conditions generally is occurrence of unfavorable downhill reactions, this issue has seldom been discussed for the CH COOH formation under periodic operation.

Exothermic methane coupling with ethylene as a hydrogen acceptor toward two-step methane conversion to ethylene.

Exothermic methane coupling with ethylene (ethene) as a hydrogen acceptor (2CH4 + C2H4 → 2C2H6) was proposed as part of a two-step reaction that includes ethane cracking (C2H6 → C2H4 + H2), which is a common industrial process, to provide methane conversion into ethylene as the net reaction (2CH4 → C2H4 + 2H2).

Simple one-step synthesis of a two-dimensional perovskite consisting of perfluoroalkyl-based ammonium spacers using acetone as the solvent.

Acetone, regarded as a poor solvent for perovskite materials, was found to be suitable for synthesis of the perfluoroalkyl-based two-dimensional (2D) perovskite (CFCHNH)PbBr. One-step synthesis gave this material as a pure phase exhibiting quantum- and dielectric-confinement effects. However, N,N-dimethylformamide (DMF), a traditional perovskite solvent, did not produce these properties.