Catalytic tar removal from bio syngas—Catalyst development and kinetic studies

Toluene oxidation over ZrO2-based gasification gas clean-up catalysts: Part B. Kinetic modeling

“…However, in methane oxidation over Y 2 O 3 -ZrO 2 the formation of CO and H 2 increased with increasing temperature (from 500 °C to 1100 °C) [25], while in toluene oxidation (present work) their formation first increased and then started to decrease with increasing temperature (from 200 °C to 600 °C). Another interesting similarity in product formation shapes was reported by Schmidt et al [26] in temperature-programmed oxidation of naphthalene (as a tar model compound) over a Mo/V/W catalyst, the product formation curve shapes obtained for CO 2 and H 2 O were similar to those over ZrO 2 (present work). Also the consumption curves of naphthalene and oxygen over the Mo/V/W catalyst showed a remarkable similarity to the consumption curves of toluene and oxygen over ZrO 2 -based catalysts.…”

“…Also the consumption curves of naphthalene and oxygen over the Mo/V/W catalyst showed a remarkable similarity to the consumption curves of toluene and oxygen over ZrO 2 -based catalysts. In addition, Schmidt et al [26] reported that in the presence of hydrogen and carbon monoxide naphthalene was fully converted at 500 °C with negligible conversions of CO and H 2 , yet the possible formation of these two was not reported.…”

Sulfur Tolerant Magnesium Nickel Silicate Catalyst for Reforming of Biomass Gasification Products to Syngas

“…Precious metals are also active for the tar reforming reaction. On a series of precious metal supported CeO 2 -SiO 2 catalysts, Tomishige et al reported that the activity decreased in a sequence of Rh > Pt > Pd (≈Ni) > Ru [21]. However, precious metal catalysts are expensive, making them less practical for tar reforming applications.…”

Sustainability of Domestic Sewage Sludge Disposal

“…Between wet and hot gas cleaning, the latter should be preferred since it really destroys the tars instead of transferring them to a liquid phase, which would need further and expensive treatment [29]. Also, for energy efficiency reasons of the whole process, the hot gas cleaning is a promising method [30] and several authors have recently studied this sort of method with successful results [30][31][32][33].…”