Constructing mesoporous solid superbases by a dualcoating strategy

Metathesis of 1‐Butene to Propene over Mo/Al2O3@SBA‐15: Influence of Alumina Introduction Methods on Catalytic Performance

“…This change wasa lso reflected by the narrower pore-diameter distribution, as shown in Figure 1b.T hese facts indicated that the introduceda lumina was highly dispersed on the pore walls of SBA-15 through the ammonia/ water vapor-induced hydrolysis (NIH) method,w hich is in good agreement with previousreports. [30,33] The low-angle XRD patterns of pristine SBA-15a nd the four alumina-coated SBA-15 samples are shown in Figure2a. The characteristic (100), (110), and (200) reflections corresponding to the hexagonal mesoporouss tructure can be clearly observedi nt he SBA-15, M-AS-30, and N-AS-30 samples, respectively,w hereas the (110) and (200) reflections are barely visible in the C-AS-30a nd W-AS-30 samples.…”

Efficient synthesis of biodiesel over well-dispersed sulfated mesoporous SiO 2 colloidal spheres

“…To overcome these drawbacks, several solid acid catalysts have been investigated, including sulfated zirconia [6], WO 3 /ZrO 2 [7], SO 4 2− /SnO 2 -SiO 2 [8], and WO 3 /MCM-14 [9]. In addition to liquid bases and solid acids, solid bases are also widely used for the esterification [10,11]. Howerver, most of those catalysts show either poor catalytic activity or significant activity loss during recycling tests.…”

Fabrication of grain-oriented silicon steel by a novel way: Strip casting process

“…Metallurgists have made lots of efforts to apply strip casting in the manufacturing of steels due to its superiority over conventional process [3][4][5]. Recently, Liu et al [6][7][8][9] successfully produced high-permeability non-oriented silicon steel based on strip casting by sufficiently utilizing its advantage in controlling the solidification texture. It is reported that the ideal texture for use in electrical motors is found in the section transverse to the columnar growth direction of ferritic steels solidification [10].…”