Access the full text.
Sign up today, get DeepDyve free for 14 days.
Loading next page...
/lp/wiley/formation-and-fate-of-formaldehyde-in-methanol-to-hydrocarbon-reaction-OSAwbqGriy
References (0)
References for this paper are not available at this time. We will be adding them shortly, thank you for your patience.
- Publisher
- Wiley
- Copyright
- © 2020 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim
- ISSN
- 1433-7851
- eISSN
- 1521-3773
- DOI
- 10.1002/anie.201914953
- Publisher site
- See Article on Publisher Site
Abstract
HCHO has been confirmed as an active intermediate in the methanol‐to‐hydrocarbon (MTH) reaction, and is critical for interpreting the mechanisms of coke formation. Here, HCHO was detected and quantified during the MTH process over HSAPO‐34 and HZSM‐5 by in situ synchrotron radiation photoionization mass spectrometry. Compared with conventional methods, excellent time‐resolved profiles were obtained to study the formation and fate of HCHO, and other products during the induction, steady‐state reaction, and deactivation periods. Similar formation trends of HCHO and methane, and their close correlation in yields suggest that they are derived from disproportionation of methanol at acidic sites. In the presence of Y2O3, the amount of HCHO changes, affecting the hydrogen‐transfer processes of olefins into aromatics and aromatics into cokes. The yield of HCHO affects the aromatic‐based cycle and the formation of ethylene, indicating that ethylene is mainly formed from the aromatic‐based cycle.
Journal
Angewandte Chemie International Edition – Wiley
Published: Mar 16, 2020
Keywords: ; ; ; ;