Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation

Search Page

Filters

My NCBI Filters

Results by year

Table representation of search results timeline featuring number of search results per year.

Year Number of Results
2008 1
2009 1
2011 2
2012 1
2013 3
2014 1
2015 1
2017 1
2018 2
2021 3
2022 1
2024 0

Text availability

Article attribute

Article type

Publication date

Search Results

16 results

Results by year

Filters applied: . Clear all
Page 1
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.
Mores D, Stavitski E, Kox MH, Kornatowski J, Olsbye U, Weckhuysen BM. Mores D, et al. Chemistry. 2008;14(36):11320-7. doi: 10.1002/chem.200801293. Chemistry. 2008. PMID: 19021162
Formation of coke in large H-ZSM-5 and H-SAPO-34 crystals during the methanol-to-olefin (MTO) reaction has been studied in a space- and time-resolved manner. ...The buildup of optically active carbonaceous species allows detection with UV/Vis microscopy, while a confocal f …
Formation of coke in large H-ZSM-5 and H-SAPO-34 crystals during the methanol-to-olefin (MTO) reaction has been studied in a space- a …
Effects of Coke Deposits on the Catalytic Performance of Large Zeolite H-ZSM-5 Crystals during Alcohol-to-Hydrocarbon Reactions as Investigated by a Combination of Optical Spectroscopy and Microscopy.
Nordvang EC, Borodina E, Ruiz-Martínez J, Fehrmann R, Weckhuysen BM. Nordvang EC, et al. Chemistry. 2015 Nov 23;21(48):17324-35. doi: 10.1002/chem.201503136. Epub 2015 Oct 14. Chemistry. 2015. PMID: 26463581 Free PMC article.
The catalytic activity of large zeolite H-ZSM-5 crystals in methanol (MTO) and ethanol-to-olefins (ETO) conversions was investigated and, using operando UV/Vis measurements, the catalytic activity and deactivation was correlated with the formation of coke. These findings w …
The catalytic activity of large zeolite H-ZSM-5 crystals in methanol (MTO) and ethanol-to-olefins (ETO) conversions was investigated and, us …
Understanding the Preparation and Reactivity of Mo/ZSM-5 Methane Dehydroaromatization Catalysts.
Liu Y, Zhang H, Wijpkema ASG, Coumans FJAG, Meng L, Uslamin EA, Longo A, Hensen EJM, Kosinov N. Liu Y, et al. Chemistry. 2022 Jan 24;28(5):e202103894. doi: 10.1002/chem.202103894. Epub 2021 Dec 16. Chemistry. 2022. PMID: 34822193 Free PMC article.
Finally, although reductive regeneration of used catalysts via methanation is less effective as compared to combustion of coke, it does not affect the structure of the catalysts....
Finally, although reductive regeneration of used catalysts via methanation is less effective as compared to combustion of coke, it do …
Suppressing Dehydroisomerization Boosts n-Butane Dehydrogenation with High Butadiene Selectivity.
Chu M, Liu Y, Gong J, Zhang C, Wang X, Zhong Q, Wu L, Xu Y. Chu M, et al. Chemistry. 2021 Aug 11;27(45):11643-11648. doi: 10.1002/chem.202101087. Epub 2021 Jun 25. Chemistry. 2021. PMID: 34089282
., Mg and Ca) into Pt-Ga(2) O(3) /S10 catalysts increases Pt dispersity, suppresses coke deposition and dehydroisomerization, and thus leads to the significant increase of BD selectivity. ...
., Mg and Ca) into Pt-Ga(2) O(3) /S10 catalysts increases Pt dispersity, suppresses coke deposition and dehydroisomerization, and thu …
How Inter- and Intramolecular Reactions Dominate the Formation of Products in Lignin Pyrolysis.
Custodis VBF, Hemberger P, van Bokhoven JA. Custodis VBF, et al. Chemistry. 2017 Jun 27;23(36):8658-8668. doi: 10.1002/chem.201700639. Epub 2017 Jun 5. Chemistry. 2017. PMID: 28386991
On the one hand, the stable 4-O-5 ether bond enables, without breaking, C-C bond formation and even directly forms naphthalene depending on the position and type of the substituent. p-Benzoquinone intermediates, on the other hand, are highly unstable at ambient pressure and direc …
On the one hand, the stable 4-O-5 ether bond enables, without breaking, C-C bond formation and even directly forms naphthalene depending on …
Combined Ex and In Situ Measurements Elucidate the Dynamics of Retained Species in ZSM-5 and SAPO-18 Catalysts Used in the Methanol-to-Olefins Reaction.
Valecillos J, Ruiz-Martinez J, Aguayo AT, Castaño P. Valecillos J, et al. Chemistry. 2021 Apr 16;27(22):6719-6731. doi: 10.1002/chem.202004865. Epub 2021 Jan 28. Chemistry. 2021. PMID: 33347673
The kinetics of this interconversion depends on the initial conversion (tuned by acidity and space time) and microporous topology, and involve: (i) in the ZSM-5 catalysts, the diffusion of monocyclic aromatics toward the exterior of the zeolite to form coke, and (ii) in th …
The kinetics of this interconversion depends on the initial conversion (tuned by acidity and space time) and microporous topology, and invol …
Coke formation during the methanol-to-olefin conversion: in situ microspectroscopy on individual H-ZSM-5 crystals with different Bronsted acidity.
Mores D, Kornatowski J, Olsbye U, Weckhuysen BM. Mores D, et al. Chemistry. 2011 Mar 1;17(10):2874-84. doi: 10.1002/chem.201002624. Epub 2011 Feb 8. Chemistry. 2011. PMID: 21305622
Coke formation during the methanol-to-olefin (MTO) conversion has been studied at the single-particle level with in situ UV/Vis and confocal fluorescence microscopy. ...It demonstrates that small coke species evenly spread throughout the entire H-ZSM-5 crystal, wher …
Coke formation during the methanol-to-olefin (MTO) conversion has been studied at the single-particle level with in situ UV/Vis and c …
In Situ Fabrication of Hierarchical MTW Zeolite via Nanoparticle Assembly by a Tailored Simple Organic Molecule.
Zhang K, Luo S, Liu Z, Li C, Ke Z, Yan X, Wu Y, Xi H. Zhang K, et al. Chemistry. 2018 Jun 7;24(32):8133-8140. doi: 10.1002/chem.201706176. Epub 2018 May 11. Chemistry. 2018. PMID: 29645298
Moreover, the as-prepared hierarchical MTW zeolite exhibited 4 times higher catalytic performance and lifetime of benzene-propene alkylation compared to conventional MTW zeolite, while the introduced crystalline mesopores are of benefit to diffuse reactants, products, and coke …
Moreover, the as-prepared hierarchical MTW zeolite exhibited 4 times higher catalytic performance and lifetime of benzene-propene alkylation …
Competitive reactions of organophosphorus radicals on coke surfaces.
Catak S, Hemelsoet K, Hermosilla L, Waroquier M, Van Speybroeck V. Catak S, et al. Chemistry. 2011 Oct 17;17(43):12027-36. doi: 10.1002/chem.201100712. Epub 2011 Sep 28. Chemistry. 2011. PMID: 21956815
Density functional calculations on benzene and a larger polyaromatic hydrocarbon, namely, ovalene, showed that organophosphorus radicals have a high propensity to add to the periphery of the coke surface, inhibiting methyl radical induced hydrogen abstraction, which is kno …
Density functional calculations on benzene and a larger polyaromatic hydrocarbon, namely, ovalene, showed that organophosphorus radicals hav …
Self-recovery of Pd nanoparticles that were dispersed over La(Sr)Fe(Mn)O3 for intelligent oxide anodes of solid-oxide fuel cells.
Shin TH, Okamoto Y, Ida S, Ishihara T. Shin TH, et al. Chemistry. 2012 Sep 10;18(37):11695-702. doi: 10.1002/chem.201200536. Epub 2012 Aug 2. Chemistry. 2012. PMID: 22865585
Recently, oxide anodes have attracted significant attention as alternative anode materials for solid-oxide fuel cells (SOFCs) that can overcome reoxidation, deactivation, and coke-deposition. However, the electrical conductivity and surface activity of the most-widely used …
Recently, oxide anodes have attracted significant attention as alternative anode materials for solid-oxide fuel cells (SOFCs) that can overc …
16 results