Reversible Conversion of MTBE on Boron-Modified Pentasil under Batch Conditions

Reversible Conversion of MTBE on Boron-Modified Pentasil under Batch Conditions 

The first in situ MAS NMR investigation of the synthesis of MTBE on acidic zeolites was performed by Mildner et al. (228) under batch reaction conditions. In this investigation, the temperature-jump MAS NMR technique (stop-and-go experiment, see Section III.A) was applied to characterize the reaction dynamics under non-equilibrium conditions on a boron-modified pentasil zeolite ( si/ 

Using the above-mentioned experimental approach, Mildner et al. (228) recorded H mas NMR spectra of the MTBE/B-pentasil system at 373, 389, 405, and 421 K. These spectra were obtained with the sample in thermal equilibrium after the 

MTBE Synthesis on Zeolite H-Beta Under CF Conditions 

Applying the equipment shown in Fig. 13 (Section III.B) the authors performed a simultaneous analysis of the reaction products leaving the MAS NMR rotor reactor by on-line gas chromatography and an NMR characterization of the compounds adsorbed on the catalyst under steady-state conditions. These investigations showed that the intensity of the signals at ca. 80 ppm correlates with the yields of MTBE determined by gas chromatography (60). An increase of the reaction temperature of the exothermic synthesis of MTBE from 333 to 353 K, led to a simultaneous 

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