Details
| Original language | English |
|---|---|
| Pages (from-to) | 472-479 |
| Number of pages | 8 |
| Journal | Zeitschrift fur Anorganische und Allgemeine Chemie |
| Volume | 642 |
| Issue number | 6 |
| Publication status | Published - 4 Apr 2016 |
Abstract
This paper is a case study of complete substitution of sodium-metasilicate in zeolite Na-A synthesis by an electrostatic filter ash (FA) arising in high amounts during silane waste incineration process. The silicate abundant FA is a suitable material for reinsertion in zeolite chemistry. This is shown in the presented investigation by the development of a model reaction process at low temperatures (50-60 °C) and short times (1.5-4 h). The experiments were performed under addition of NaAlO2 and variation of the alkalinity and the reaction period. Characterization and fine tuning of the process was mainly done by studying the kinetics of FA digestion and zeolite crystallization by XRD and chemical analyses (ICP-OES) of solutions and solids. It could be shown that pure FA was mostly dissolved (98 %) in 8 M NaOH already after 1 h. Addition of NaAlO2 and crystallization for further 60 min under optimized conditions at 50 °C yielded to a suitable product. It consists of zeolite Na-A (92 % by mass) beside some hydrosodalite (8 % by mass). According to this low temperature short time process this study is a contribution for the development of energy efficient recycling solutions.
Keywords
- Electrostatic filter ash (FA), Silanes, Sodium-metasilicate, Zeolites
ASJC Scopus subject areas
- Chemistry(all)
- Inorganic Chemistry
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In: Zeitschrift fur Anorganische und Allgemeine Chemie, Vol. 642, No. 6, 04.04.2016, p. 472-479.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Electrostatic Filter Ash from Silane Production as Silicate Substitute in Zeolite Chemistry
AU - Hartmann, Andrea
AU - Petrov, Valeriy
AU - Buhl, Josef Christian
AU - Rübner, Katrin
AU - Lindemann, Matthias
N1 - Funding Information: Acknowledgements: The authors acknowledge the Deutsche Forschungsgemeinschaft for funding this research project.
PY - 2016/4/4
Y1 - 2016/4/4
N2 - This paper is a case study of complete substitution of sodium-metasilicate in zeolite Na-A synthesis by an electrostatic filter ash (FA) arising in high amounts during silane waste incineration process. The silicate abundant FA is a suitable material for reinsertion in zeolite chemistry. This is shown in the presented investigation by the development of a model reaction process at low temperatures (50-60 °C) and short times (1.5-4 h). The experiments were performed under addition of NaAlO2 and variation of the alkalinity and the reaction period. Characterization and fine tuning of the process was mainly done by studying the kinetics of FA digestion and zeolite crystallization by XRD and chemical analyses (ICP-OES) of solutions and solids. It could be shown that pure FA was mostly dissolved (98 %) in 8 M NaOH already after 1 h. Addition of NaAlO2 and crystallization for further 60 min under optimized conditions at 50 °C yielded to a suitable product. It consists of zeolite Na-A (92 % by mass) beside some hydrosodalite (8 % by mass). According to this low temperature short time process this study is a contribution for the development of energy efficient recycling solutions.
AB - This paper is a case study of complete substitution of sodium-metasilicate in zeolite Na-A synthesis by an electrostatic filter ash (FA) arising in high amounts during silane waste incineration process. The silicate abundant FA is a suitable material for reinsertion in zeolite chemistry. This is shown in the presented investigation by the development of a model reaction process at low temperatures (50-60 °C) and short times (1.5-4 h). The experiments were performed under addition of NaAlO2 and variation of the alkalinity and the reaction period. Characterization and fine tuning of the process was mainly done by studying the kinetics of FA digestion and zeolite crystallization by XRD and chemical analyses (ICP-OES) of solutions and solids. It could be shown that pure FA was mostly dissolved (98 %) in 8 M NaOH already after 1 h. Addition of NaAlO2 and crystallization for further 60 min under optimized conditions at 50 °C yielded to a suitable product. It consists of zeolite Na-A (92 % by mass) beside some hydrosodalite (8 % by mass). According to this low temperature short time process this study is a contribution for the development of energy efficient recycling solutions.
KW - Electrostatic filter ash (FA)
KW - Silanes
KW - Sodium-metasilicate
KW - Zeolites
UR - http://www.scopus.com/inward/record.url?scp=84962498120&partnerID=8YFLogxK
U2 - 10.1002/zaac.201500803
DO - 10.1002/zaac.201500803
M3 - Article
AN - SCOPUS:84962498120
VL - 642
SP - 472
EP - 479
JO - Zeitschrift fur Anorganische und Allgemeine Chemie
JF - Zeitschrift fur Anorganische und Allgemeine Chemie
SN - 0044-2313
IS - 6
ER -