This study has investigated the thermal processes of three types of Municipal Solid Wastes (MSW) in Taipei. Three key properties of the processes are concerned, the formation of tar, the sulfur content, and the reforming of CH 4 as the syngas is used for Solid Oxide Fuel Cells (SOFCs). K 2 CO 3 is used as a catalyst to reduce the amount of tar. One of tar production from MSW is reduced from 37.2 wt% to 13.7 wt%. The raw syngas from gasification is then reformed using a Ni-CeO 2 catalyst on a γ-Al 2 O 3 support to optimize the quantity of H 2 and reduce the CH 4 content. H 2 S generated by waste paper is in a level of 1.83 ppm, and reduced to 0.04 ppm by CaCO 3 . Syngas with a composition of 51.3 vol% H 2 , 44.8 vol% CO and 3.4 vol% CH 4 is used for the power generation by a selfassembled SOFC. The best power density is 269 mW.cm -2 at 800°C, which is inferior to the maximum value of 326 mW.cm -2 for a cell that uses H 2 as the fuel.

Sulfur and CH 4 are two important ingredients in synthesized gaseous fuels and they must be removed before use in solid oxide fuel cells. This study compares the gasification of mixtures of waste paper and plastics and with that for wood. The produced fuel (syngas), which is rich in H 2 , CH 4 and CO, is reformed and desulfurized using stacks of 3D-printed catalyst carriers, which are made using thee ceramic powders (ZnO, θ-Al 2 O 3 , and CaCO 3 ). The pyramid-shaped carrier features high porosity (50%) and good strength (ca. 6 MPa). It carries fine-grain Ni+CeO 2 catalyst and increases the retention of the syngas. The performance of the thee carriers is determined with respect to the gas content (including H 2 , CH 4 , CO and H 2 S) in the syngas.