Shigeru Futamura

Learn More
Hydrogen generation from water, methane, and methanol was investigated with different types of nonthermal plasma reactors under different conditions. With a ferroelectric packed-bed reactor in N/sub 2/, hydrogen gas yield decreased in the order: methanol>methane>water. A similar trend was observed with a silent discharge plasma reactor, but substrate(More)
Reactor type and voltage properties affected the reforming behavior of 1% methanol in N/sub 2/ with nonthermal plasma. Methanol conversion increased with voltage frequency for both a ferroelectric packed-bed reactor (FPR) and a silent discharge reactor (SDR), but they showed different sensitivities to frequency change at fixed applied voltages. In the(More)
Steam reforming of methane, ethane, propane and neopentane was investigated with two types of nonthermal plasma reactors. With a ferroelectric packed-bed reactor (FPR) in N/sub 2/, almost the same conversions were obtained for ethane, propane and neopentane, but methane was less reactive than these hydrocarbons. Hydrogen gas yield decreased in the order:(More)
This work presents a comparative assessment of five different types of plasma reactors (pulsed corona, dielectric-barrier discharge (DBD), surface discharge (SD), BaTiO/sub 3/ packed-bed reactor, and plasma-driven catalyst (PDC) reactor) using the decomposition of gas-phase benzene. The parameters used in the assessment include energy constant, carbon(More)
CO/sub 2/ reforming of methane, propane, and neopentane was investigated with a ferroelectric packed-bed reactor (FPR) in N/sub 2/ at temperatures ranging from 298 K to 433 K. The reaction behavior of the hydrocarbons was greatly affected by their chemical structures and reaction temperature. At ambient temperature, hydrocarbon conversion decreased in the(More)
In the decomposition of methanol, dichloromethane, toluene, and their binary mixtures with nonthermal plasma in N<sub>2</sub>, the energy efficiency for the decomposition of each volatile organic compound (VOC) increased with its initial concentration. The addition of oxygen increased the maximum energy efficiency and the corresponding reactor energy(More)
A silent discharge reactor (SDR) or a surface discharge reactor (SFR) was combined with catalysts such as MnO<sub>2</sub>, TiO<sub>2</sub>-SiO<sub>2</sub> gel, etc. to investigate the synergistic effect of nonthermal plasma (NTP) and catalysts in the decomposition of volatile organic compounds (VOCs) such as toluene (PhCH<sub>3</sub>), dichloromethane and(More)
⎯ The decomposition of volatile organic compounds (VOCs) was investigated using a flow-type plasma-driven catalysis (PDC) system and a cycled system. In the flow-type PDC reactor a trade-off relation was observed between the formation of nitrogen oxides and the decomposition of VOCs. Complete decomposition of VOC to CO 2 was achieved with the cycled system(More)
This paper describes the decomposition of volatile organic compounds (VOCs), such as benzene, formic acid, oxylene, m-xylene, p-xylene, and toluene, using plasma-driven catalyst (PDC) reactor. The behaviors of different VOCs were compared in terms of decomposition efficiency, carbon balance, reaction kinetics, and CO/sub 2/ selectivity. In contrast to the(More)
CO<sub>2</sub> reforming of methane, propane, and neopentane was investigated with a ferroelectric packed-bed and silent discharge plasma reactors in N<sub>2</sub> at temperature from 303 to 433 K. The conversions of the substrate hydrocarbons and CO<sub>2</sub>, and the yields of H<sub>2</sub> and CO were expressed as functions of reactor energy density(More)