Yasushi Sekine

Abstract Considering the expansion of the use of renewable energy in the future, the technology to store and transport hydrogen will be important. Hydrogen is gaseous at an ambient condition, diffuses easily, and its energy density is low. So liquid organic hydrogen carriers (LOHCs) have been proposed as a way to store hydrogen in high density. LOHC can store, transport, and use hydrogen at high density by hydrogenation and dehydrogenation cycles. In this review, we will focus on typical LOHCs,

To understand the mechanisms of transport for organelles in the axon, we isolated and sequenced the cDNA encoding KIF4 from murine brain, and characterized the molecule biochemically and immunocytochemically. Complete amino acid sequence analysis of KIF4 and ultrastructural studies of KIF4 molecules expressed in Sf9 cells revealed that the protein contains 1,231 amino acid residues (M(r) 139,550) and that the molecule (116-nm rod with globular heads and tail) consists of three domains: an NH2-te

Insertion sequence IS1 has two coding frames, insA and insB, which are essential for its transposition. Here, we show that a frameshifting event in the -1 direction from the 3' end region of the insA frame to an open reading frame (B' frame), extending from the 5' end of the insB frame, is involved in production of the InsA-B'-InsB fusion protein that has IS1 transposase activity. The frameshifting event is likely to have occurred at the sequence AAAAAC where the insA frame overlaps the B' frame

Elucidating the role of metal modification and confined hydrocarbon species in the aromatization of ethylene on zeolite catalysts.

Highly efficient ammonia synthesis at a low temperature is desirable for future energy and material sources. We accomplished efficient electrocatalytic low-temperature ammonia synthesis with the highest yield ever reported. The maximum ammonia synthesis rate was 30 099 μmol g_cat^-1 h^-1 over a 9.9 wt% Cs/5.0 wt% Ru/SrZrO₃ catalyst, which is a very high rate. Proton hopping on the surface of the heterogeneous catalyst played an important role in the react

We investigated four catalytic reactions assisted with an electric field to promote catalytic activity, and we could achieve an effective process for hydrogen production at low temperatures, such as 423 K. In the presence of the electric field, four reactions of steam reforming of ethanol, decomposition of ethanol, water gas shift, and steam reforming of methane proceeded at very low temperature, such as 423 K, where a conventional catalytic reaction hardly proceeded. Conversion of reactant was

A survey on the catalytic nature of Ni-based alloy catalysts in recent years provides a direction for future catalyst development.