National Institute of Advanced Industrial Science and Technology

About: National Institute of Advanced Industrial Science and Technology is a government organization based out in Tsukuba, Ibaraki, Japan. It is known for research contribution in the topics: Catalysis & Thin film. The organization has 22114 authors who have published 65856 publications receiving 1669827 citations. The organization is also known as: Sangyō Gijutsu Sōgō Kenkyū-sho.

Temperature and Pressure Dependence of the Viscosity of the Ionic Liquids 1-Hexyl-3-methylimidazolium Hexafluorophosphate and 1-Butyl-3-methylimidazolium Bis(trifluoromethylsulfonyl)imide

Abstract: The viscosities of the ionic liquids 1-methyl-3-hexylimidazolium hexafluorophosphate, [HMIM]PF6, and 1-butyl-3-methylimidazolium bis(trifluorosulfonyl)imide, [BMIM][Tf2N], have been measured between (0 and 80) °C and at maximum pressures of 238 MPa ([HMIM]PF6) and 300 MPa ([BMIM][Tf2N]) at 75 °C with a falling-body viscometer. The overall uncertainty is estimated at ± 2 %. Modified Litovitz and Vogel−Fulcher−Tammann (VFT) equations are used to represent the temperature and pressure dependence. The Angell equation relating the strength factor D, the VFT parameter T0, and the glass temperature Tg is confirmed. Densities between (0 and 90) °C at atmospheric pressure with an overall uncertainty estimated at ± 0.000 05 g·cm-3 are also reported.

Magnetic and martensitic phase transitions in ferromagnetic Ni–Ga–Fe shape memory alloys

Abstract: Ferromagnetic shape memory alloys with a body-centered-cubic ordered structure in a Ni–Ga–Fe system have been developed. The alloys with the composition range of Ni 27 at. % Ga (20–22 at. %)Fe exhibit a thermoelastic martensitic transformation from a B2 and/or an L21 parent to a martensite phase, with a seven-layer modulated (14M) and a five-layer modulated (10M) structure, in the ferromagnetic state. The parent phase transforms from the B2 to the L21 structure at about 970 K during cooling, and the degree of the L21 order in the parent phase is increased by annealing at 773 K, resulting in the increase of both the martensite starting and the Curie temperatures. The ductility of these alloys is improved by introducing of a small amount of a γ-phase solid solution. Consequently, we can conclude that the present alloys are promising for ferromagnetic shape memory alloys.

Polyanthraquinone as a Reliable Organic Electrode for Stable and Fast Lithium Storage

Abstract: In spite of recent progress, there is still a lack of reliable organic electrodes for Li storage with high comprehensive performance, especially in terms of long-term cycling stability. Herein, we report an ideal polymer electrode based on anthraquinone, namely, polyanthraquinone (PAQ), or specifically, poly(1,4-anthraquinone) (P14AQ) and poly(1,5-anthraquinone) (P15AQ). As a lithium-storage cathode, P14AQ showed exceptional performance, including reversible capacity almost equal to the theoretical value (260 mA h g(-1); >257 mA h g(-1) for AQ), a very small voltage gap between the charge and discharge curves (2.18-2.14=0.04 V), stable cycling performance (99.4% capacity retention after 1000 cycles), and fast-discharge/charge ability (release of 69% of the low-rate capacity or 64% of the energy in just 2 min). Exploration of the structure-performance relationship between P14AQ and related materials also provided us with deeper understanding for the design of organic electrodes.

Mesoporous Metal-Organic Frameworks with Size-tunable Cages: Selective CO2 Uptake, Encapsulation of Ln3+ Cations for Luminescence, and Column-Chromatographic Dye Separation

Abstract: Emerging as a new class of porous materials in the last two decades, metal-organic frameworks (MOFs) have been met with great interest owing to their tunable structures and porosities and a wide range of potential applications as functional materials. [ 1 , 2 ] A key feature in MOFs is the porosity, which plays a crucial role in the functional properties, typically in gas/liquid sorption and separation and transport of catalytic substrates/ products. [ 1 , 3 ] The MOFs with tunable pore sizes ranging from non-pores to mesopores are regarded to bridge the gap between zeolites and mesoporous silica. [ 4 ] In recent years much effort has been dedicated to develop MOFs with large and tunable pores, and there are a few mesoporous MOFs reported with various synthetic strategies. [ 1e , 5 ] Increasing the length of bridging ligands has been adopted as a main strategy, but reduced porosity imposed by interpenetration is nevertheless almost unavoidable. [ 6 ] Because of these diffi culties it has been rarely reported to obtain a series of mesoporous MOFs that retain both structure and tunable mesopores upon suppressed interpenetration. To the best of our knowledge, only Schröder, Zhou, and Lin’s groups have constructed a series of mesoporous Cu-/Zn-MOFs with fi xed framework topology but varied pore sizes by systematically varying the length of the bridged ligands, where they have concerned the high gas uptake capabilities or catalytic enantioselectivities, while no selective gas sorption behavior was found for these pore size-tailored MOFs. [ 7 ]