| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2011: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2010: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2009: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Research Abstract |
The pH-selective decomposition of formic acid (HCOOH) leading to efficient generation of hydrogen was achieved at room temperature in deaerated water using a heterodinuclear iridium-ruthenium complex (1) as a catalyst. Hydrogen isotopic gases (HD and/or D2) were selectively generated using deuterated formic acid (DCOOH) or D2O in place of HCOOH or H2O, respectively. The complex 1 is found to act as an efficient catalyst for four-electron reduction of O2 with formic acid at room temperature in aerated water. Photocatalytic hydrogen evolution occurs at room temperature under visible-light irradiation of an aqueous solution of [Ru(bpy)3]2+(bpy = 2,2’-bipyridine) and ascorbic acid in the presence of 1. Interconversion between H2 and formic acid accompanied by CO2emission and fixation has been made possible in water at ambient temperature under atmospheric pressure by using a [C,N] cyclometallated organoiridium complex as an efficient catalyst for both directions depending on pH.
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