In situ MAS NMR–UV/Vis investigation of H-SAPO-34 catalysts partially coked in the methanol-to-olefin conversion under continuous-flow conditions and of their regeneration

2007 ◽  
Vol 105 (1-2) ◽  
pp. 132-139 ◽  
Author(s):  
Yijiao Jiang ◽  
Jun Huang ◽  
V.R. Reddy Marthala ◽  
Yean S. Ooi ◽  
Jens Weitkamp ◽  
...  
Keyword(s):  
Continuous Flow ◽  
Mas Nmr ◽  
Flow Conditions ◽  
Olefin Conversion ◽  
Methanol To Olefin

scholarly journals Space- and Time-Resolved In-situ Spectroscopy on the Coke Formation in Molecular Sieves: Methanol-to-Olefin Conversion over H-ZSM-5 and H-SAPO-34

2008 ◽  
Vol 14 (36) ◽  
pp. 11320-11327 ◽  
Author(s):  
Davide Mores ◽  
Eli Stavitski ◽  
Marianne H. F. Kox ◽  
Jan Kornatowski ◽  
Unni Olsbye ◽  
...  
Keyword(s):  
Molecular Sieves ◽  
Coke Formation ◽  
In Situ Spectroscopy ◽  
Time Resolved ◽  
Space And Time ◽  
Olefin Conversion ◽  
Methanol To Olefin

scholarly journals Biofilm dynamics: linking in situ biofilm biomass and metabolic activity measurements in real-time under continuous flow conditions

2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Kyle B. Klopper ◽  
Riaan N. de Witt ◽  
Elanna Bester ◽  
Leon M. T. Dicks ◽  
Gideon M. Wolfaardt
Keyword(s):  
Real Time ◽  
Metabolic Activity ◽  
Continuous Flow ◽  
Control Strategies ◽  
Mass Function ◽  
Flow Conditions ◽  
Carbon Dioxide Evolution ◽  
Activity Measurements ◽  
The Internet Of Things

Abstract The tools used to study biofilms generally involve either destructive, end-point analyses or periodic measurements. The advent of the internet of things (IoT) era allows circumvention of these limitations. Here we introduce and detail the development of the BioSpec; a modular, nondestructive, real-time monitoring system, which accurately and reliably track changes in biofilm biomass over time. The performance of the system was validated using a commercial spectrophotometer and produced comparable results for variations in planktonic and sessile biomass. BioSpec was combined with the previously developed carbon dioxide evolution measurement system (CEMS) to allow simultaneous measurement of biofilm biomass and metabolic activity and revealed a differential response of these interrelated parameters to changing environmental conditions. The application of this system can facilitate a greater understanding of biofilm mass–function relationships and aid in the development of biofilm control strategies.

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