Polybenzimidazole reduction

Some ordered structure is formed in the surface layer adjoining the friction surface during friction of polyheteroarylenes of the chain and cyclochain structure (polycarbonate, polyarylates, pol3dmides, pol3rphenylquinoxalines, polybenzimidazoles and others). This results in stabilization of friction and reduction of the friction coefficient [107]. 

NADH oxidation, carbon dioxide reduction, etc. As electroactive, reversibly redox switching materials, ECPs are good candidates for electrocatalytic applications, as demonstrated in the case of oxygen reduction [265] in that case, calculations show strong chemisorption ability of almost all classical ECPs toward oxygen. Such an electrocatalytic behavior was experimentally evidenced in the case of electropolymerized polybenzimidazole [266] toward several redox reactions. 

Petrushina IM (2(X)3) Electrochemical promotion of NO reduction by hydrogen on a platinum/ polybenzimidazole catalyst. J Electrochem Soc 150 D87-D90... 

Liu Z, Wainright JS, Litt MH et al (2006) Study of the oxygen reduction reaction (ORR) at Pt interfaced with phosphoric acid doped polybenzimidazole at elevated temperature and low relative humidity. Electrochim Acta 51 3914-3923... 

In contrast to the Nafion-FEP system, in which the immiscibility of the polymer components is clearly shown in Fig. 14.8, greater compatibility of Nafion and polybenzimidazole (PBI) was expected due to acid-base interactions between imidazole nitrogens and sulfonic acid protons. PBI should function in such a system as a crosslinker (see Fig. 14.15), producing a reduction in membrane swelling and permeability by methanol. Although the idea of examining acid-base membrane blends in fuel cells is not new [9,11-13,30], little work has been carried out with Nafion. 

Reduction of esters of o-nitrobenzy alcohol to yield o-NBA can be accomplished using sodium borohydride in aqueous media. Reductions of o-nitrobenzaldehyde to o-NBA using sodium borohydride under phase transfer conditions, " dimethoxyborane-CoCl2, and trimethoxysilane-lithium methoxide " have been reported. Reduction of the nitro group of o-NBA to the amine using catalytic hydrogenation with Pd° and polybenzimidazole resin in DMF is likewise known. ... 

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