Results 91 to 100 of about 9,583 (259)
Shield materials recommended for space power nuclear reactors [PDF]
Lithium hydride is recommended for neutron attenuation and depleted uranium is recommended for gamma ray attenuation. For minimum shield weights these materials must be arranged in alternate layers to attenuate the secondary gamma rays efficiently.
Kaszubinski, L. J.
core +1 more source
Polyimides Derived from Novel Asymmetric Benzophenone Dianhydrides [PDF]
This invention relates to the composition and processes for preparing thermoset polyimides derived from an asymmetric dianhydride, namely 2,3,3',4'-benzophenone dianhydride (a-BTDA) with at least one diamine, and a monofunctional terminal endcaps.
Chuang, Chun-Hua
core +1 more source
, 2013 The practical application of hydrogen as new energy vector presents several problems that have not been solved yet. One of the major constraints is the lack of a safe, compact and efficient way to store hydrogen, mainly for mobile applications. Solid–hydrogen storage is one of the potential solutions.
openaire +1 more source
Study of the 2LiBH4 + MgH2 reactive hydride composite doped with Fe and F3Fe for hydrogen storage
, 2010 LiBH4 is a promising material to store hydrogen because of its interesting characteristics. It has high hydrogen gravimetric capacity (18.4 wt%) which is far above of the target established by the International Energy Agency (5.0 wt% of hydrogen) and low weight [1–3].
openaire +1 more source
Polyimides Derived from Novel Asymmetric Dianhydrides [PDF]
, 2012 This invention relates to the compositions and processes for preparing thermoset and thermoplastic polyimides derived from novel asymmetrical dianhydrides: specifically 2,3,3',4' benzophenone dianhydride (a-BTDA), and 3,4'-(hexafluoroisopropylidene ...
Chuang, Chun-Hua
core +1 more source
Formulation, Casting, and Evaluation of Paraffin-Based Solid Fuels Containing Energetic and Novel Additives for Hybrid Rockets [PDF]
, 2012 This investigation studied the inclusion of various additives to paraffin wax for use in a hybrid rocket motor. Some of the paraffin-based fuels were doped with various percentages of LiAlH4 (up to 10%).
Borduin, Russell +9 more
core +1 more source
Synthesis of asymmetric tetracarboxylic acids and corresponding dianhydrides [PDF]
, 2008 This invention relates to processes for preparing asymmetrical biphenyl tetracarboxylic acids and the corresponding asymmetrical dianhydrides, namely 2,3,3',4'-biphenyl dianhydride (a-BPDA), 2,3,3',4'-benzophenone dianhydride (a-BTDA) and 3,4 ...
Chuang, Chun-Hua
core +1 more source
A Review on Magnesium Based Metal Hydrides for Thermal Energy Storage Systems
Asia-Pacific Journal of Chemical Engineering, EarlyView.ABSTRACT The hydrogen storage in metal hydrides is an imminent, innovative, and environmentally beneficial approach that offers benefits for example, an ample amount of storage and elasticity in terms of thermodynamics necessary for hydrogen absorption and release.
Asif Nizam +3 more
wiley +1 more source
Enhancement of hydrogen release kinetics from ethane 1,2 diamineborane (EDAB) by micronization using Supercritical Antisolvent (SAS) Precipitation [PDF]
, 2016 Ethane 1, 2 diamineborane (EDAB) was micronized from THF solutions using Supercritical Antisolvent (SAS) process. The influence of temperature, solute concentration and carbon dioxide fraction on the final properties of EDAB particles was studied. By SAS
Martín Martínez, Ángel +3 more
core +1 more source
Biofuels, Bioproducts and Biorefining, EarlyView.Abstract A novel phosphoric acid‐treated green coconut fiber (GCF‐C) was developed as a catalyst for hydrogen production from the hydrolysis of sodium borohydride (NaBH4). Characterization techniques confirmed structural modifications, including X‐ray diffraction, scanning electron microscopy, X‐ray fluorescence, Fourier transform infrared, and ...
Isabelly Silveira Freitas +16 more
wiley +1 more source