Promoting Syngas to Olefins with Isolated Internal Silanols-Enriched Al-IDM-1 Aluminosilicate Nanosheets.

Selective conversion of syngas to value-added olefins has attracted considerable research interest. Regulating product distribution remains challenging, such as achieving higher olefin selectivity, propylene/ethylene (P/E) and olefin/paraffin (O/P) ratios. A new pentasil zeolite Al-IDM-1 with recently approved -ION structure, composed of 17-membered-ring (MR) extra-large lobed pores and intersected 10-MR medium pores, shows a C selectivity up to 85 % and a high O/P value of 14 in the conversion of syngas when being combined with Zn Al O oxide.

Direct synthesis of IDM-1 aluminosilicate nanosheets with improved MTP performance.

Aluminosilicate nanosheets with pure IDM-1 structure, abbreviated as Al-I1, were rapidly synthesized by adjusting the F sources. Through preliminary aging, the length along the -axis of Al-I1 was precisely tuned in the range of 40-200 nm and meanwhile the competitive growth to the phase was suppressed. With improved mass transport owing to expanded pores and shortened diffusion path along the -axis, the Al-I1 nanosheets exhibited superior catalytic performance to conventional -axis oriented ZSM-5 in the methanol-to-propylene (MTP) reaction.

Circ_0001897 regulates high glucose-induced angiogenesis and inflammation in retinal microvascular endothelial cells through miR-29c-3p/transforming growth factor beta 2 axis.

Diabetic retinopathy (DR) has become the leading cause of blindness among adults at working age. Previous studies have implicated circ_0001897 in the development of DR. In this study, we investigated the functional roles and mechanisms of circ_0001897 in high glucose-induced angiogenesis and inflammation.