Rice husk was completely used for synthesis gas production. The pyrolysis volatiles (gas and bio-oil) of rice husk were used as raw materials to produce synthesis gas and the bio-char from the rice husk pyrolysis was used as the catalyst for catalytic reforming of pyrolysis volatiles of rice husk. We investigated the role of catalysts in gas and bio-oil catalytic reformation under different reaction conditions and the interaction between gas and bio-oil. The results indicated that 0.1Ni-0.1Co/RHPC (rice husk pyrolysis carbon) exhibited favorable selectivity and high conversion for rice husk pyrolysis volatiles. In particular, H 2 and CO contents from bio-oil were 56% and 18%, respectively, 37% and 36% from gas, respectively.Moreover, the content of H 2 is 32%, while that of CO is 22% after catalytic reforming from the mixture of gas and bio-oil. The Co-Ni/RHPC catalysts were characterized by X-ray diffraction, FT-IR, NH 3 -TPD, H 2 -TPR and N 2 adsorption and desorption. BET results showed that adding Co and Ni can effectively enhance the BET surface from 4 m 2 g À1 to 96 m 2 g À1 . XRD results showed the active parts of the Ni and Co diffraction peaks remained evident after reaction.

No abstract

Zn–Al–La layered double hydroxides (LDHs) were prepared by the hydrothermal method and used as a new anodic material for Zn–Ni secondary batteries. The morphology and microstructure of Zn–Al–La-LDHs were analyzed by Fourier transform infrared, X-ray diffraction (XRD), and scanning electron microscopy (SEM). The electrochemical properties of Zn–Al–La-LDHs as negative electrode materials for Zn–Ni batteries were studied by the cyclic voltammetry, Tafel polarization curve, and constant current charge–discharge test. XRD and SEM analysis showed that the crystallinity of the prepared Zn–Al–La-LDHs was good and the dispersion was uniform and showed regular hexagonal structures. The results of electrical properties show that Zn–Al–La-LDHs have good cycle reversibility and corrosion resistance when applied to Zn–Ni secondary batteries. The analysis of galvanostatic charge–discharge measurement results shows that the Zn–Al–La-LDH electrode has excellent cycle stability and charge–discharge characteristics. After 150 cycles, the cycle retention rate can reach 91.63%.

No abstract