Swift Synthesis of Hierarchically Ordered Mesocellular Mesoporous Silica by Microwave-Assisted Hydrothermal Method

Abstract

Hierarchically ordered mesocellular mesoporous silicas (HMMS) were swiftly synthesized using P123 and sodium silicate as a silica source within an hour by applying microwave irradiation without pore expander. The XRD, TEM and BET studies demonstrated that materials as-synthesized and calcined have the hierarchically ordered mesocellular structure with two different sizes about 10 nm and 30 nm pores having a minimized micropore volume compared with conventional hydrothermal method. Moreover, the HMMS sample prepared by microwave-assisted hydrothermal method had higher surface area than that of conventional hydrothermal method. The variation of the pore size and morphology of mesocellular structure varied with the aging time.

Identification and Characterization of 1,4-β-D-Glucan Glucohydrolase for the Saccharification of Cell Oligomers from Paenibacillus sp. HPL-001

“…Exoglucanase has been found to have a marked preference for substrates with lower DP [5], as would be expected given the greater availability of chain ends with decreasing DP. It is well known that endoglucanase activity leads to an increase in chain ends without resulting in appreciable solubilization [22]. We know of no indication in the literature that the rate of chain end creation by endoglucanase is impacted by substrate DP.…”