Cyclopentadienyl-titanium complexes containing –OC6H4X ligands (X = Cl, CH3) activated with methylaluminoxane (MAO) were used in the homo-polymerization of ethylene, propylene, 1-butene, 1-pentene, 1-butene, and 1-hexene, and also in copolymerization of ethylene with the α-olefins mentioned. The -X substituents exhibit different electron donor-acceptor properties, which is described by Hammett’...

Oligomerization of connexins is a critical step in gap junction channel formation. Some members of the connexin family can oligomerize with other members and form functional heteromeric hemichannels [e.g. Cx43 (connexin 43) and Cx45], but others are incompatible (e.g. Cx43 and Cx26). To find connexin domains important for oligomerization, we constructed chimaeras between Cx43 and Cx26 and studi...

An effective Pd-catalyzed hydrocarboxylation of olefins using formic acid with acetic anhydride as a co-catalyst is described. A variety of carboxylic acids are obtained in good yields with high regioselectivities under mild reaction conditions without the use of toxic CO gas.

Palladium(II) complexes containing phosphine donor ligands derived from naphthyl(diphenyl)phosphine were synthesized and characterized by NMR and elemental analysis. The complexes were studied as catalyst precursors in the methoxycarbonylation reaction of several aromatic and aliphatic olefins under mild conditions. The catalysts reported high chemoselectivities (over 96%) and regioselectivitie...

The structural properties and activities of Cu-Co catalysts used in Fischer-Tropsch synthesis are explored according to their method of preparation. Impregnation, co-precipitation, and a novel method of thermal decomposition were applied to an inorganic precursor complex to generate the Cu-promoted alumina- and silica-supported cobalt catalysts. The precursors and the catalysts obtained by ...

The production of light olefins, as the critical components in chemical industries, is possible via different technologies. Fischer–Tropsch to olefin (FTO) process aims convert syngas olefins with high selectivity over a proper catalyst, reduce methane formation, and avoid excess CO2. This review describes through FTO using both unsupported supported iron-based catalysts. catalytic properties p...

The synthesis of the ZSM-5 and beta zeolites in their nanosized form has been achieved by using simple alkyl-substituted mono-cationic cyclic ammonium cations as OSDA molecules. The particular combination of a cyclic fragment and a short linear alkyl-chain group (preferentially C4) within the monocationic OSDA molecules allows directing the crystallization of nanosized zeolites with excellent s...

K-promoted Fe–Co bimetallic catalysts fabricated by a straightforward sol–gel approach exhibited outstanding catalytic performance for one step selective hydrogenation of CO 2 into high value-added liquid hydrocarbons with C 10 –C 20 linear α-olefins.

Inflammatory Bowel Disease Relief In article number 2214693, Yunjiao Zhang and co-workers demonstrate 2D cobalt oxyhydroxide nanosheets (Co NSs) with excellent multienzyme-like activity as potential inhibitors of NLRP3 inflammasome pyroptosis. Owing to the robust reactive oxygen species scavenging oligomerization inhibiting ability, Co NSs block assembly activation inflammasome, thereby exhibit...