A reinvestigation of the hypersonic properties and the specific heat capacity of PMMA around the quasi-static glass transition II. High performance caloric investigations
To continue dynamicc p measurements in the range of smallest temperature rates and non-linear thermal relaxation investigations into the linear range, simultaneousc p and thermal relaxation measurements were carried out in an adiabatic vacuum calorimeter, using the pulse heating method. The rate-dependentc p behaviour, known from dynamic measurements, does not continue at small temperature rates. This is confirmed by the relaxation process which is observed. The results suggest an extended interpretation of the glass transition in atactic polymethylmethacrylate (PMMA).
One of the fundamental steps to the successful operation of biomass gasification technologies for power generation is the efficiency of the gas cleaning step. Catalytic cracking is selected as the hot gas cleaning technology for this research using zeolite HZSM-5 catalyst in order to reduce tar produced from palm shells gasification in the laboratory scale fixed bed gasifier. The catalyst load of 2, 5 and 10 weight % of the weight of palms shells has been tested in experiment. Gas chromatographic analysis of the tar produced has been conducted along with the study of biomass gasification index (BGI), emissions of CO, NO, and SO2. Furthermore, suitable correlations for the tar removal cleanup for syngas derived from biomass palm shells at different operating parameters when using HZSM-5 catalyst have been developed from the interpolation of the experimental data obtained.