[{"type":"journal_article","publication":"Microporous and Mesoporous Materials","status":"public","abstract":[{"lang":"eng","text":"In a systematic study on the synthesis of aluminophosphates (AlPOs) under ionothermal conditions, initially using 1-butyl-3-methylimidazolium bromide ([C4mim]Br) as ionic liquid solvent and structure-directing agent, the effect of the reaction conditions (i.e. molar P/Al, F/Al and ionic liquid/Al ratios, alternative fluoride sources, influence of the ionic liquid’s cation or anion, temperature, reaction time) on the framework type was studied in detail. In [C4mim]Br, the formation of the more thermodynamically stable AEL framework type proceeds via AFI. The framework type can be changed by choosing another anion or cation of the ionic liquid. Hence, the successful ionothermal synthesis of the AFI framework AlPO is reported by using either N-ethylpyridinium bromide ([C2py]Br) or 1-butyl-3-methylimidazolium chloride ([C4mim]Cl). The mineraliser [Me4N]F, rather than HF, has been used for the first time as an alternative fluoride source in ionothermal synthesis, which can also affect the framework type. Hence, a very efficient synthesis of the LTA framework type is reported in [C4mim]Br using [Me4N]F. Ab initio molecular dynamics (AIMD) studies showed that the anion bridges between the aluminium atoms of the framework and the cation. The interaction is more favoured in the presence of the bromide than the chloride, which may be a clue to the question why the AEL framework is not formed in the chloride-based ionic liquid. This study opens several routes to pursue in the future as numerous ionic liquids are available which can be used in ionothermal synthesis."}],"user_id":"100715","_id":"63924","language":[{"iso":"eng"}],"extern":"1","keyword":["Aluminophosphates","Ionic liquids","Ionothermal synthesis","Microporous materials","Zeolite analogous"],"citation":{"chicago":"Azim, Muhammad Mohsin, Alfonso Pensado, Barbara Kirchner, Torsten Gutmann, Pedro B. Groszewicz, Gerd Buntkowsky, and Annegret Stark. “Ionothermal Synthesis of Crystalline Microporous Aluminophosphates: Systematic Study on the Conditions Affecting the Framework Type.” <i>Microporous and Mesoporous Materials</i> 266 (2018): 204–213. <a href=\"https://doi.org/10.1016/j.micromeso.2018.02.053\">https://doi.org/10.1016/j.micromeso.2018.02.053</a>.","ieee":"M. M. Azim <i>et al.</i>, “Ionothermal synthesis of crystalline microporous aluminophosphates: Systematic study on the conditions affecting the framework type,” <i>Microporous and Mesoporous Materials</i>, vol. 266, pp. 204–213, 2018, doi: <a href=\"https://doi.org/10.1016/j.micromeso.2018.02.053\">10.1016/j.micromeso.2018.02.053</a>.","ama":"Azim MM, Pensado A, Kirchner B, et al. Ionothermal synthesis of crystalline microporous aluminophosphates: Systematic study on the conditions affecting the framework type. <i>Microporous and Mesoporous Materials</i>. 2018;266:204–213. doi:<a href=\"https://doi.org/10.1016/j.micromeso.2018.02.053\">10.1016/j.micromeso.2018.02.053</a>","apa":"Azim, M. M., Pensado, A., Kirchner, B., Gutmann, T., Groszewicz, P. B., Buntkowsky, G., &#38; Stark, A. (2018). Ionothermal synthesis of crystalline microporous aluminophosphates: Systematic study on the conditions affecting the framework type. <i>Microporous and Mesoporous Materials</i>, <i>266</i>, 204–213. <a href=\"https://doi.org/10.1016/j.micromeso.2018.02.053\">https://doi.org/10.1016/j.micromeso.2018.02.053</a>","mla":"Azim, Muhammad Mohsin, et al. “Ionothermal Synthesis of Crystalline Microporous Aluminophosphates: Systematic Study on the Conditions Affecting the Framework Type.” <i>Microporous and Mesoporous Materials</i>, vol. 266, 2018, pp. 204–213, doi:<a href=\"https://doi.org/10.1016/j.micromeso.2018.02.053\">10.1016/j.micromeso.2018.02.053</a>.","short":"M.M. Azim, A. Pensado, B. Kirchner, T. Gutmann, P.B. Groszewicz, G. Buntkowsky, A. Stark, Microporous and Mesoporous Materials 266 (2018) 204–213.","bibtex":"@article{Azim_Pensado_Kirchner_Gutmann_Groszewicz_Buntkowsky_Stark_2018, title={Ionothermal synthesis of crystalline microporous aluminophosphates: Systematic study on the conditions affecting the framework type}, volume={266}, DOI={<a href=\"https://doi.org/10.1016/j.micromeso.2018.02.053\">10.1016/j.micromeso.2018.02.053</a>}, journal={Microporous and Mesoporous Materials}, author={Azim, Muhammad Mohsin and Pensado, Alfonso and Kirchner, Barbara and Gutmann, Torsten and Groszewicz, Pedro B. and Buntkowsky, Gerd and Stark, Annegret}, year={2018}, pages={204–213} }"},"intvolume":"       266","page":"204–213","year":"2018","date_created":"2026-02-07T08:58:23Z","author":[{"last_name":"Azim","full_name":"Azim, Muhammad Mohsin","first_name":"Muhammad Mohsin"},{"first_name":"Alfonso","last_name":"Pensado","full_name":"Pensado, Alfonso"},{"first_name":"Barbara","last_name":"Kirchner","full_name":"Kirchner, Barbara"},{"last_name":"Gutmann","id":"118165","full_name":"Gutmann, Torsten","first_name":"Torsten"},{"first_name":"Pedro B.","last_name":"Groszewicz","full_name":"Groszewicz, Pedro B."},{"full_name":"Buntkowsky, Gerd","last_name":"Buntkowsky","first_name":"Gerd"},{"first_name":"Annegret","full_name":"Stark, Annegret","last_name":"Stark"}],"volume":266,"date_updated":"2026-02-17T16:19:17Z","doi":"10.1016/j.micromeso.2018.02.053","title":"Ionothermal synthesis of crystalline microporous aluminophosphates: Systematic study on the conditions affecting the framework type"},{"quality_controlled":"1","publication_identifier":{"issn":["1948-5719"]},"year":"2012","page":"1141-1144","citation":{"ieee":"P. Bornmann, T. Hemsel, W. Sextro, T. Maeda, and T. Morita, “Non-perturbing cavitation detection / monitoring in sonochemical reactors,” in <i>Ultrasonics Symposium (IUS), 2012 IEEE International</i>, 2012, pp. 1141–1144.","chicago":"Bornmann, Peter, Tobias Hemsel, Walter Sextro, Takafumi Maeda, and Takeshi Morita. “Non-Perturbing Cavitation Detection / Monitoring in Sonochemical Reactors.” In <i>Ultrasonics Symposium (IUS), 2012 IEEE International</i>, 1141–44, 2012. <a href=\"https://doi.org/10.1109/ULTSYM.2012.0284\">https://doi.org/10.1109/ULTSYM.2012.0284</a>.","ama":"Bornmann P, Hemsel T, Sextro W, Maeda T, Morita T. Non-perturbing cavitation detection / monitoring in sonochemical reactors. In: <i>Ultrasonics Symposium (IUS), 2012 IEEE International</i>. ; 2012:1141-1144. doi:<a href=\"https://doi.org/10.1109/ULTSYM.2012.0284\">10.1109/ULTSYM.2012.0284</a>","apa":"Bornmann, P., Hemsel, T., Sextro, W., Maeda, T., &#38; Morita, T. (2012). Non-perturbing cavitation detection / monitoring in sonochemical reactors. In <i>Ultrasonics Symposium (IUS), 2012 IEEE International</i> (pp. 1141–1144). <a href=\"https://doi.org/10.1109/ULTSYM.2012.0284\">https://doi.org/10.1109/ULTSYM.2012.0284</a>","short":"P. Bornmann, T. Hemsel, W. Sextro, T. Maeda, T. Morita, in: Ultrasonics Symposium (IUS), 2012 IEEE International, 2012, pp. 1141–1144.","bibtex":"@inproceedings{Bornmann_Hemsel_Sextro_Maeda_Morita_2012, title={Non-perturbing cavitation detection / monitoring in sonochemical reactors}, DOI={<a href=\"https://doi.org/10.1109/ULTSYM.2012.0284\">10.1109/ULTSYM.2012.0284</a>}, booktitle={Ultrasonics Symposium (IUS), 2012 IEEE International}, author={Bornmann, Peter and Hemsel, Tobias and Sextro, Walter and Maeda, Takafumi and Morita, Takeshi}, year={2012}, pages={1141–1144} }","mla":"Bornmann, Peter, et al. “Non-Perturbing Cavitation Detection / Monitoring in Sonochemical Reactors.” <i>Ultrasonics Symposium (IUS), 2012 IEEE International</i>, 2012, pp. 1141–44, doi:<a href=\"https://doi.org/10.1109/ULTSYM.2012.0284\">10.1109/ULTSYM.2012.0284</a>."},"date_updated":"2022-01-06T07:04:20Z","author":[{"first_name":"Peter","last_name":"Bornmann","full_name":"Bornmann, Peter"},{"id":"210","full_name":"Hemsel, Tobias","last_name":"Hemsel","first_name":"Tobias"},{"last_name":"Sextro","id":"21220","full_name":"Sextro, Walter","first_name":"Walter"},{"first_name":"Takafumi","last_name":"Maeda","full_name":"Maeda, Takafumi"},{"first_name":"Takeshi","full_name":"Morita, Takeshi","last_name":"Morita"}],"date_created":"2019-05-13T13:18:49Z","title":"Non-perturbing cavitation detection / monitoring in sonochemical reactors","doi":"10.1109/ULTSYM.2012.0284","publication":"Ultrasonics Symposium (IUS), 2012 IEEE International","type":"conference","abstract":[{"lang":"eng","text":"To optimize the ultrasound irradiation for cavitation based ultrasound applications like sonochemistry or ultrasound cleaning, the correlation between cavitation intensity and the resulting effect on the process is of interest. Furthermore, changing conditions like temperature and pressure result in varying acoustic properties of the liquid. That might necessitate an adaption of the ultrasound irradiation. To detect such changes during operation, process monitoring is desired. Labor intensive processes, that might be carried out for several hours, also require process monitoring to increase their reliability by detection of changes or malfunctions during operation. In some applications cavitation detection and monitoring can be achieved by the application of sensors in the sound field. Though the application of sensors is possible, this necessitates modifications on the system and the sensor might disturb the sound field. In other applications harsh, process conditions prohibit the application of sensors in the sound field. Therefore alternative techniques for cavitation detection and monitoring are desired. The applicability of an external microphone and a self-sensing ultrasound transducer for cavitation detection were experimentally investigated. Both methods were found to be suitable and easily applicable."}],"status":"public","_id":"9783","department":[{"_id":"151"}],"user_id":"55222","keyword":["cavitation","chemical reactors","microphones","process monitoring","reliability","ultrasonic applications","ultrasonic waves","acoustic properties","cavitation based ultrasound applications","cavitation intensity","change detection reliability","external microphone","malfunction detection reliability","nonperturbing cavitation detection","nonperturbing cavitation monitoring","process monitoring","self-sensing ultrasound transducer","sonochemical reactors","sonochemistry","ultrasound cleaning","ultrasound irradiation","Acoustics","Liquids","Monitoring","Sensors","Sonar equipment","Transducers","Ultrasonic imaging"],"language":[{"iso":"eng"}]}]