D the Ni2 NiTiO3 to be lowered at a higher temperature. The resolution, which caused the Ni2 in in NiTiO3 to become decreased at a larger temperature. The greater calcination and reduction temperature will bring about serious sintering with the active metal plus the carrier, thus affecting the performance in the catalyst. It truly is well-known that the acidity with the catalyst has a vital influence on the Antibacterial Compound Library Epigenetic Reader Domain catalytic overall performance and anti-coking functionality through the reforming reaction [49]. Weak acid facilitates the Receptor Proteins Storage & Stability adsorption of reactants, even though robust acid easily led to carbon on the catalyst surface. NH3 -Temperature programmed desorption profile was used to study the acid strength traits on the Ni-supported TiO2 catalyst as a function on the calcination temperature. The outcomes are shown in Figure five and Table 2. It could be stated that all catalysts are dominated by two desorption regions at reduced than 550 C and larger than 550 C related with weak/medium and powerful acid web-sites, respectively [50]. For the assistance TiO2 , there’s a bulky and wide desorption peak (Tmax = 220 C) brought on by Ti H of your assistance surface, indicating that the weak acid and medium strong acid coexist in the assistance TiO2 as well as the weak acid could be the major 1. For the NiO/Ti-500C, the intensity of desorption peak at 350 C increases progressively, and new desorption peaks seem at ca. 550 C and ca. 650 C, indicating that the acidity on the catalyst becomes stronger when the catalyst is calcined at 500 C. For the NiO/Ti-600C, NiO/Ti-700C, NiO/Ti-800C, when the calcination temperature is additional elevated, the intensity of desorption peak beneath 550 C progressively decreases or even disappears, whilst the desorption peak above 550 C shifts to aNanomaterials 2021, 11,550 and ca. 650 , indicating that the acidity with the catalyst beco the catalyst is calcined at 500 . For the NiO/Ti-600C, NiO/Ti-700C, the calcination temperature is further enhanced, the intensity of des 9 of 17 550 gradually decreases or perhaps disappears, though the desorption shifts to a greater temperature, indicating that the NiO/TiO2 catalyst tr dium acid into robust acid at greater temperature. As all of us know, t larger temperature, indicating that the NiO/TiO2 catalyst transforms weak/medium acid into strong acid at larger temperature. As deposition on theacidity of the catalyst the catalyst might cause carbon we all know, the robust surface with the catalys may cause carbon deposition on the surface with the catalyst, which will cause a decrease within a decrease in its catalytic activity [51]. The effect on the surface acid its catalytic activity [51]. The effect of your surface acidity around the catalytic properties are going to be properties might be discussed under. discussed beneath.(a)Intensity (a.u.)(b) (c) (d) (e)200 300 400 500 600Temperature Figure 5. NH3 -TPD -TPD profiles two , (b)(a) TiO2, (b) NiO/Ti-500C, NiO/Ti-700C, Figure 5. NH3 profiles of (a) TiO of NiO/Ti-500C, (c) NiO/Ti-600C, (d) (c) NiO/Ti-600C (e) NiO/Ti-800C.NiO/Ti-800C.three.2. Catalytic Functionality Tests three.two.1. Catalytic Efficiency Tests of GSRThe effects of reaction temperature on the activity of Ni/Ti-500R, Ni/Ti-600R, Ni/Ti700R and Ni/Ti-800R Functionality Tests and GSR 3.2.1. Catalytic in GSR have been investigated, with the corresponding results are shown in Figure six. When the reaction temperature is 500 C and 550 C, the glycerol conversion The effects of reaction indicating that the Ni the activity of potential rate and H2 yield of all catalysts are low, temperature onpar.
