Premium
PH sensitive structural uniformity of rice husk ash‐derived MCM‐41 silica
Author(s) -
Teabpinyok Nopporn,
Chareonpanich Metta,
Samingprai Sutheerawat,
Limtrakul Jumras
Publication year - 2012
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.21678
Subject(s) - husk , sodium silicate , molar ratio , hydrothermal circulation , ammonium chloride , nuclear chemistry , ammonium , mesoporous silica , sodium , chemistry , materials science , mesoporous material , chemical engineering , composite material , organic chemistry , catalysis , botany , engineering , biology
In this study, highly uniform MCM‐41 mesoporous silica was synthesised from rice husk ash‐derived sodium silicate using cetyltrimethyl ammonium chloride (CTAC) as a template. The chemical composition of the gel mixture was based on a SiO 2 :CTAC:H 2 O molar ratio of 1:0.5:75. When the pH value was initially controlled at ranges of 5.0–10.5 for 5 h and then immediately adjusted to 11.25 for the next 1 h, the structural uniformity of MCM‐41 was abruptly increased by 3.3–7.5 times of the single pH value at 11.25, respectively. Moreover, thermal and hydrothermal stabilities at 900 and 250°C were clearly observed. © 2012 Canadian Society for Chemical Engineering
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom