نتایج جستجو برای: Nickel-phosphorus

تعداد نتایج: 75078  

1992
Shekhar Kumar

t is well recognized that electroless I.' nickel-phosphorus offers excellent deposition characteristics, such as uniform coverage, freedom from porosity, hardness, corrosion resistance, solderability, braze and weldability, wear resistance and lubricity.' Interest in the properties of electroless nickel has grown in recent years, leading to the development of wide-ranging applications, a compre...

Journal: :Physical chemistry chemical physics : PCCP 2012
Y Y Dou G R Li J Song X P Gao

Nickel phosphide-embedded graphene, prepared by the hydrothermal reaction of red phosphorus, nickel chloride, and graphene oxide in a mixture of ethylene glycol-water, is investigated as the counter electrode of DSSCs. It is demonstrated that the DSSC with the nickel phosphide-embedded graphene as the new counter electrode presents an excellent performance competing with that of the Pt electrode.

2014
Hongfang Ma Jianwen Li Haitao Zhang Qiwen Sun Weiyong Ying

Catalytic cracking of butene to propylene was carried out in a continuous-flow fixed-bed reactor over HZSM-5 catalysts modified by nickel and phosphorus. The structure and acidity of catalysts were measured by N2 adsorption, NH3-TPD and XPS. The results revealed that surface area and strong acid sites both decreased with increasing phosphorus loadings. The increment of phosphorus loadings reduc...

2003

The study was done on how adsorption of carbon monoxide gas on the catalytic surface is affected by doping with boron and phosphorus in metallic nickel powder. The effect of doping was investigated using FTIR spectroscopy and compared to the spectra obtained from adsorption of carbon monoxide on pure nickel catalyst surface. An understanding of the results obtained from the nickel sample was al...

Journal: :Physical chemistry chemical physics : PCCP 2016
Mingyan Chen Zhizhou Yu Yin Wang Yiqun Xie Jian Wang Hong Guo

Monolayer black phosphorus (MBP) is an interesting emerging electronic material with a direct band gap and relatively high carrier mobility. In this work we report a theoretical investigation of nonequilibrium spin injection and spin-polarized quantum transport in MBP from ferromagnetic Ni contacts, in two-dimensional magnetic tunneling structures. We investigate physical properties such as the...

Journal: :Nutricion hospitalaria 2005
P Sidhu M L Garg P Morgenstern J Vogt T Butz D K Dhawan

This study was designed to determine the toxic effects of nickel sulfate on the biochemical and elemental profile of liver in protein deficient rats. Nickel sulfate in the dose of 800mg/l in drinking water was administrated to Sprauge Dawley (S.D) normal control as well as protein deficient rats for a total duration of eight weeks. The effects of nickel treatment and protein deficiency when giv...

Journal: :Journal of the American Chemical Society 2013
Pavel A Donets Nicolai Cramer

Chiral trivalent phosphorus species are the dominant class of ligands and the key controlling element in asymmetric homogeneous transition-metal catalysis. Here, novel chiral diaminophosphine oxide ligands are described. The arising catalyst system with nickel(0) and trimethylaluminum efficiently activates formamide C-H bonds under mild conditions providing pyrrolidones via intramolecular hydro...

رفیعی دمنه, معصومه, شبانی, لیلا,

Fungus-plant associations are of the most important mutually beneficial relationships in the ecosystem which positive effects on growth, physiology and ecology of different plants have been already demonstrated. Biological methods such as employing symbiotic (arbuscular mycorrhizal) fungi to roots of plants are considered as potential effective ways of reducing the stressful effects of soil con...

Journal: :Journal of the Surface Finishing Society of Japan 1995

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید