Abstract: The present invention relate to a methane synthesis catalyst preparation method, comprising a preparation step for a catalytic body and a prereduction step. The prereduction step comprises: calcining the catalytic body to form a nickel aluminate spinel-containing catalyst precursor; and prereducing the catalyst precursor to acquire the methane synthesis catalyst. The catalyst prepared in the preparation method can be used in high-temperature and high liquid-to-gas ratio conditions, shows performance stability, and obviates the need for a further step of high-temperature reduction during vehicle operation. Also provided is the methane synthesis catalyst precursor. The catalyst precursor contains nickel aluminate spinel.

Abstract: The present invention relates to a capacitor with various capacitances, comprising dielectric sheets, outer electrodes, and inner electrodes, printed on said dielectric sheets, wherein said dielectric sheets are overlapped, the odd layers of said dielectric sheets are first dielectric sheets, and the even layers of said dielectric sheets are second dielectric sheets, an inner electrode on said first dielectric sheet and/or an inner electrode on said second dielectric sheet is divided into at least two isolated electrodes, each electrode on said first dielectric sheet and said second dielectric sheet is leaded respectively to form terminal electrodes, and said terminal electrodes are encapsulated to form the outer electrodes.

Abstract: The present invention relate to a methane synthesis catalyst preparation method, comprising a preparation step for a catalytic body and a prereduction step. The prereduction step comprises: calcining the catalytic body to form a nickel aluminate spinel-containing catalyst precursor; and prereducing the catalyst precursor to acquire the methane synthesis catalyst. The catalyst prepared in the preparation method can be used in high-temperature and high liquid-to-gas ratio conditions, shows performance stability, and obviates the need for a further step of high-temperature reduction during vehicle operation. Also provided is the methane synthesis catalyst precursor. The catalyst precursor contains nickel aluminate spinel.