2 research outputs found
Kinetic Modeling of Inherent Mineral Catalyzed NO Reduction by Biomass Char
The
evolution of rice straw char reactivity during reaction with
NO was examined in differential reactor at 900 and 1000 °C. Original
and acid-washed rice straw chars were used. Surface area and mineral
content of char samples with different conversion were analyzed. The
reactivity of the acid-washed char increased until conversion <i>X</i><sub>char</sub> = 20%, remained constant, and then decreased
continuously to zero. The reactivity of the original char decreased
continuously to zero throughout the reaction, with a faster decrease
at 1000 °C. Mineral transformation during original char reaction
was obvious. Concentration of acid-soluble K decreased about 56% and
90% at 900 and 1000 °C. Ca and Mg released little to gas phase,
but reacted with SiO<sub>2</sub> in a small amount. The evolution
of the acid-washed char reactivity correlated well with the development
of surface area and was well predicted by random pore model. The reactivity
of the original char depended not only on the development of surface
area, but also on transformation of inherent minerals, mainly K. A
two-reaction model was built which well predicted inherent K transformation.
A modified random pore model was developed, which successfully simulated
inherent mineral catalyzed char-NO reaction
Supplement 1: Pathway-resolved photoelectron emission in dissociative ionization of molecules
details on the experimental and theoretical methods Originally published in Optica on 20 June 2016 (optica-3-6-643