.... The receiver-reactor and strategy of operation were iteratively optimized with respect to chemical conversion and reactor efficiency. Parametric studies were conducted with varying partial pressure of S O 3 , residence time, absorber temperature, the presence of catalyst, and the performance of different...

...Juan M. Coronado; Benigno Sánchez; Fernando Fresno; Silvia Suárez; Raquel Portela In this work, the influence of the reactor configuration and the characteristics of the catalysts on the photodegradation of trichloroethylene (TCE) vapors are studied under sunlight illumination. The photocatalytic...

... O 2 amount P25 layers exhibit about 50% of photoactivity using Ti O 2 suspension. 13 11 2007 07 12 2007 05 09 2008 additives catalysts industrial pollution light sources photochemistry photodissociation plastics sol-gel processing suspensions titanium compounds water...

... are responsible for visible light activity and the role of the nitrogen is to stabilize them. Enhancing the photocatalytic activity of Ti O 2 has been targeted since the catalyst was recognized as a promising material for environmental applications ( 1 2 3 ). Its practical usage in the form...

... of the three organics during their photocatalytic treatment has also been studied. The obtained results have been interpreted according to Fourier transform infrared studies on the interaction of the molecules with the catalyst surface and their reaction mechanisms by gas chromatographpy-mass spectrometry (GC...

...R. Ben-Zvi; J. Karni The Directly-Irradiated Annular Pressurized Receiver ( DIAPR ) volumetric solar absorber was adapted to operate as a methane reformer by coating the absorber pins with catalyst. A computational model is applied to assess and improve the system design. The simulation entails...

... are transition-metal oxygen-anion clusters that exhibit interesting catalytic and photoredox properties depending on their composition and architecture ( 3 ). As catalysts, they have been utilized in several commercial processes (e.g., the oxidation of metacrolein into methacrylic acid). In aqueous solutions...

...H. I. Villafán-Vidales; S. A. Cuevas; C. A. Arancibia-Bulnes Background. The calculation of radiation absorption by the catalyst in solar photocatalytic reactors has been addressed by some authors, because it is a necessary step for the modeling of the detoxification of polluted water...

.... 29 06 2005 29 11 2005 photochemistry catalysts water treatment decontamination titanium compounds solar absorber-convertors sol-gel processing organic compounds films spin coating photocatalysis supported catalyst silver deposition sol-gel film Ti O 2...

...J. Araña; J. M. Doña Rodríguez; O. González Díaz; J. A. Herrera Melián; J. Pérez Peña. The photocatalytic features of Ti O 2 doped with ferric oxides or mixed with activated carbon ( AC - Ti O 2 ) are compared with those of the unmodified Degussa P-25 Ti O 2 . These new catalysts show specific...

... bottles. e-mail: litter@cnea.gov.ar 05 07 2005 28 09 2005 catalysts plastic products bottles titanium compounds photochemistry solar photocatalysis SODIS titanium dioxide fixation Low-cost technologies are needed to bring solutions to the serious...

.... of 12th SolarPACES International Symposium Mexico , C. , Ramos and J. , Huacuz , eds., Electrical Research Institute (IIE) , Mexico , IIE Paper No S5-316. Berman , A. and Epstein , M. , 1998 , “ Ruthenium Catalysts for High Temperature Solar Reforming of Methane ,” Hydrogen...

...Tsuyoshi Hatamachi; Tatsuya Kodama; Yuuki Isobe The composite materials of Ni-applied, porous zirconia balls with molten Na 2 CO 3 salt were examined for use in solar thermochemical reforming of methane as the catalyst with high-temperature thermal storage. The millimeter-sized composite balls were...

...Hisahiro Einaga; Takashi Ibusuki; Shigeru Futamura Photocatalytic oxidation of benzene in air at room temperature was studied in order to obtain the information on its reactivity on the photoirradiated TiO 2 catalyst. The objective of this paper is to describe in detail the dependence of the rate...

... to an example of each one of the experiments carried out but really they have been repeated at least once. Similar tests at higher catalyst concentrations have not been performed because solution opacity increases and no improvement in the mineralization will be obtained. As during the oxidation process many...