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Metal-organic framework compound consisting of terephthalic acid and chromium cation (TPA _ Cr) was prepared by the hydrothermal method and characterized by XRD, N2 adsorption-desoprtion isotherm, TGA-DTA and TEM. The prepared TPA _ Cr was crystalline and phase-pure. Noble metal was supported on TPA _ Cr by the conventional impregnation method. The specific Pd salt and solvent for impregnation significantly influenced the location of Pd. With [Pd(NH3)4](NO3)2 dissolved in water, Pd was located in the micropores of TPA _ Cr, whereas with PdCl2 dissolved in water or methanol, Pd was located on the external surface of TPA _ Cr. Hydrogenation of cinnamaldehyde and crotonaldehyde, and cross-coupling between aryl bromides and phenylboronic acid were studied using Pd/TPA _ Cr and Ru/TPA _ Cr prepared as above. Hydrogenation of the two model aldehydes occurred in the micro-and meso-pores of TPA _ Cr whereas cross-coupling reaction of bulkier compounds occurred mostly on the external surface of TPA _ Cr.

Fischer-Tropsch synthesis (FTS) using a Co _ Mn/oxidized diamond (O-Dia) catalyst was compared among a fixed bed reactor (FBR), a trickle bed reactor (TBR), and a slurry phase reactor (SPR). For TBR and SPR, hexadecane was employed as a solvent. Regardless of the reactor, the addition of 10 mol% of Mn to Co/O-Dia catalyst greatly increased CO conversion without changing selectivity to C5 liquid products. The highest initial CO conversion was obtained with FBR. However, with an increase in the time on stream, CO conversion decreased, due mainly to the accumulation of high molecular weight hydrocarbons (wax) on the catalyst bed. Although with TBR the initial CO conversion was 5 % lower than that with FBR, at a feed rate of the solvent from 3 to 12 mL/(g-catalyst h), CO conversion did not decrease during a prolonged run. SPR maintained the initial CO conversion for 24 h on stream, but the CO conversion was half of that with TBR. From these findings, we propose that TBR is the most appropriate reactor type for FTS.

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