01902nas a2200301   4500008004100000022001400041245013000055210006900185260000900254300001000263490000800273520089400281653002501175653001201200653003701212653002501249653001401274653003201288100001801320700001401338700001801352700001701370700002901387700002001416700002001436700001901456856012501475       2018                        eng d  a0926-860X00aEffect of alkali and alkaline earth metal on Co/CeO2 catalyst for the water gas shift reaction of waste derived synthesis gas0 aEffect of alkali and alkaline earth metal on CoCeO2 catalyst for  cFEB   a63-700 v5513 a<p>We prepared a series of alkali (Na and K) and alkaline earth metal (Ca and Ba) promoted Co/CeO2 catalysts to investigate the effect of the promoter on the catalytic performance of the catalyst in the high-temperature water gas shift (WGS) reaction of waste derived synthesis gas. Interestingly, alkali metal promoted catalysts deactivated rapidly compared to alkaline earth metal promoted catalysts. Alkaline earth metal promoted catalysts showed relatively higher stability (&gt;50 h) even at a very high gas hourly space velocity of 143,000 h(-1). X-ray diffraction (XRD) and transmission electron microscopy (TEM) results reveal that the higher stability of the alkaline earth metal promoted catalysts was due to the strong resistance to sintering, showing a relatively small crystallite size of metallic cobalt compared to the alkali metal promoted catalysts after WGS reaction.</p>10aAlkaline earth metal10aCo/CeO210aHigh temperature water-gas shift10aSintering resistance10astability10aWaste derived synthesis gas1 aLee, Yeol-Lim1 aJha, Ajay1 aJang, Won-Jun1 aShim, Jae-Oh1 aRode, Chandrashekhar, V.1 aJeon, Byong-Hun1 aBae, Jong, Wook1 aRoh, Hyun-Seog  uhttps://library.ncl.res.in/content/effect-alkali-and-alkaline-earth-metal-coceo2-catalyst-water-gas-shift-reaction-waste01636nas a2200265   4500008004100000022001300041245010800054210006900162260000800231300001000239490000800249520077800257100001701035700001701052700001801069700002001087700001701107700001801124700001501142700002001157700002001177700002901197700001901226856012501245       2018                        eng d  a0920586100aEffect of titration time on the catalytic performance of Cu/CeO2 catalysts for water-gas shift reaction0 aEffect of titration time on the catalytic performance of CuCeO2   cJUL  a83-880 v3093 aWe herein report the preparation of ceria (CeO2) via a simple precipitation method for use as a catalyst support in the water-gas shift (WGS) reaction. More specifically, we optimized the titration time required to obtain highly active CeO2-supported catalysts for the WGS reaction. As such, Cu was employed as the active metal coupled with the CeO2 support. Notably, the CeO2-0 supported Cu catalyst (where the precipitant was immediately injected into a cerium nitrate solution) exhibited the highest CO conversion at a gas hourly space velocity of 36,050 h(-1). This high catalytic activity of the Cu/CeO2-0 catalyst was mainly due to its high Brunauer-Emmett-Teller (BET) surface area, enhanced Cu dispersion, high number of oxygen vacancies, and enhanced reducibility.1 aNa, Hyun-Suk1 aShim, Jae-Oh1 aJang, Won-Jun1 aJeon, Kyung-Won1 aKim, Hak-Min1 aLee, Yeol-Lim1 aLee, Da-We1 aYoo, Seong-Yeun1 aBae, Jong, Wook1 aRode, Chandrashekhar, V.1 aRoh, Hyun-Seog  uhttps://library.ncl.res.in/content/effect-titration-time-catalytic-performance-cuceo2-catalysts-water-gas-shift-reaction