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Effects of reaction conditions on the production of alcohols (AOHs) and alkanes (Alk) from CO and H 2 , which can be obtained from the gasification of biomass, using a molybdenum sulfide (MoS 2 )-based catalyst of MoS 2 /γ-Al 2 O 3 were studied. A high-pressure fixed packed bed (HPFPB) was employed to carry out the reaction. The results indicate that the conversion of CO (X CO ) and specific production rates of alcohol (SPR AOH ) and alkane (SPR Alk ) are highly depended on temperature (T). In T = 423-573 K, maximum yield of alcohols (Y AOH ) and SPR AOH occur at T = 523 K. In the meantime, well performance gives the selectivity of ethanol (S EtOH ) of 52.0 C%. For the studies on varying H 2 /CO mole ratio (M H/C ) from 1 to 4 at 523 K, the appropriate M H/C to produce EtOH is 2, giving higher ratios of SPR AOH /SPR Alk and Y AOH /Y Alk than those with other M H/C . As for varying the total gas flow rates (Q G ) of 300, 450, 600 to 900 cm 3 min −1 tested at T = 523 K and M H/C = 2, the lower Q G provides longer reaction time (or gaseous retention time, t R ) thus OPEN ACCESSEnergies 2012, 5 4148 offering higher X CO , however lower productivity. For setting pressure (P ST ) = 225-540 psi, a supply of higher pressure is equivalent to providing a larger amount of reactants into the reaction system, this thus suggests the use of higher P ST should give both higher X CO and productivity. The assessment of the above results indicates that the MoS 2 /γ-Al 2 O 3 catalyst favors the production of alcohols over alkanes, especially for ethanol. The information obtained is useful for the proper utilization of biomass derived gases of CO and H 2 .

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Dimethyl phthalate (DMP) was treated via wet oxygen oxidation process (WOP). The decomposition efficiency η DMP of DMP and mineralization efficiency η TOC of total organic carbons were measured to evaluate the effects of operation parameters on the performance of WOP. The results revealed that reaction temperature T is the most affecting factor, with a higher T offering higher η DMP and η TOC as expected. The η DMP increases as rotating speed increases from 300 to 500 rpm with stirring enhancement of gas liquid mass transfer. However, it exhibits reduction effect at 700 rpm due to purging of dissolved oxygen by overstirring. Regarding the effects of pressure P T, a higher P T provides more oxygen for the forward reaction with DMP, while overhigh P T increases the absorption of gaseous products such as CO2 and decomposes short-chain hydrocarbon fragments back into the solution thus hindering the forward reaction. For the tested P T of 2.41 to 3.45 MPa, the results indicated that 2.41 MPa is appropriate. A longer reaction time of course gives better performance. At 500 rpm, 483 K, 2.41 MPa, and 180 min, the η DMP and η TOC are 93 and 36%, respectively.