tailieunhanh - Báo cáo hóa học: " Mesoporous Silica: A Suitable Adsorbent for Amines Cyrus Zamani Æ Xavi Illa Æ Sara Abdollahzadeh-Ghom Æ "

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Mesoporous Silica: A Suitable Adsorbent for Amines Cyrus Zamani Æ Xavi Illa Æ Sara Abdollahzadeh-Ghom Æ | Nanoscale Res Lett 2009 4 1303-1308 DOI s11671-009-9396-5 NANO EXPRESS Mesoporous Silica A Suitable Adsorbent for Amines Cyrus Zamani Xavi Illa Sara Abdollahzadeh-Ghom J. R. Morante Albert Romano Rodríguez Received 29 January 2009 Accepted 10 July 2009 Published online 23 July 2009 to the authors 2009 Abstract Mesoporous silica with KIT-6 structure was investigated as a preconcentrating material in chromatographic systems for ammonia and trimethylamine. Its adsorption capacity was compared to that of existing commercial materials showing its increased adsorption power. In addition KIT-6 mesoporous silica efficiently adsorbs both gases while none of the employed commercial adsorbents did. This means that KIT-6 Mesoporous silica may be a good choice for integrated chromatography gas sensing micro-devices. Keywords Ammonia Trimethylamine KIT-6 Mesoporous silica Preconcentration Desorption Introduction Mesoporous materials are proved to be good candidates for gas sensing purposes as well as for many other applications such as environmentally friendly fuels 1 new generation optical devices 2 biochemical separations bioactivity control for medical applications 3 catalytic adsorption and molecular sieves 4-6 which have been reported so far. Due to the large surface area of such structures with nano-size pores mesoporous materials are considered as a good choice for catalytic systems supports for sophisticated materials etc. 7 . Among various mesoporous C. Zamani El X. Illa A. Romano Rodríguez MIND-IN2UB Dept. Electronica Universitat de Barcelona Marti i Franques 1 08028 Barcelona Catalonia Spain e-mail czamani@ S. Abdollahzadeh-Ghom J. R. Morante ME2 Dept. Electronica Universitat de Barcelona Marti i Franques 1 08028 Barcelona Spain materials studied mesoporous silica has found a great interest due to its promising physical and chemical properties 8-10 . Various types of mesoporous silica have been produced so far SBA-15 and KIT-6 are now applied as .