Hydrocarbon Pool Mechanism of the Zeolite-Catalyzed Conversion of Ethene to Propene

ACS Catalysis ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 10640-10648 ◽  
Author(s):  
Kyounghwan Lee ◽  
Suk Bong Hong
Keyword(s):  
Hydrocarbon Pool ◽  
Hydrocarbon Pool Mechanism

scholarly journals How Many Molecules Can Fit in a Zeolite Pore? Implications for the Hydrocarbon Pool Mechanism of the Methanol-to-Hydrocarbons Process

Catalysts ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 1204
Author(s):  
Stewart Parker ◽  
Aleena Kombanal
Keyword(s):  
Steady State ◽  
Light Alkenes ◽  
Hydrocarbon Pool ◽  
Methanol To Hydrocarbons ◽  
Commodity Chemicals ◽  
Minimum Number ◽  
Dual Cycle ◽  
Materials Used ◽  
Hydrocarbon Pool Mechanism ◽  
Available Volume

The methanol-to-hydrocarbons (MTH) process is a very advantageous way to upgrade methanol to more valuable commodity chemicals such as light alkenes and gasoline. There is general agreement that, at steady state, the process operates via a dual cycle “hydrocarbon pool” mechanism. This mechanism defines a minimum number of reactants, intermediates, and products that must be present for the reaction to occur. In this paper, we calculate (by three independent methods) the volume required for a range of compounds that must be present in a working catalyst. These are compared to the available volume in a range of zeolites that have been used, or tested, for MTH. We show that this straightforward comparison provides a means to rationalize the product slate and the deactivation pathways in zeotype materials used for the MTH reaction.

scholarly journals Chloromethane to olefins over H-SAPO-34: Probing the hydrocarbon pool mechanism

2016 ◽  
Vol 527 ◽  
pp. 146-151 ◽  
Author(s):  
Dustin W. Fickel ◽  
Kaiwalya D. Sabnis ◽  
Luanyi Li ◽  
Neeta Kulkarni ◽  
Lea R. Winter ◽  
...  
Keyword(s):  
Hydrocarbon Pool ◽  
Hydrocarbon Pool Mechanism

Theoretical Study of the Methylbenzene Side-Chain Hydrocarbon Pool Mechanism in Methanol to Olefin Catalysis

2004 ◽  
Vol 126 (9) ◽  
pp. 2991-3001 ◽  
Author(s):  
Bjørnar Arstad ◽  
John B. Nicholas ◽  
James F. Haw
Keyword(s):  
Theoretical Study ◽  
Side Chain ◽  
Hydrocarbon Pool ◽  
Methanol To Olefin ◽  
Hydrocarbon Pool Mechanism ◽  
Chain Hydrocarbon

scholarly journals Aromatic-based hydrocarbon pool mechanism for methanol-to-olefins conversion in H-SAPO-18: A van der Waals density functional study

2015 ◽  
Vol 36 (9) ◽  
pp. 1573-1579 ◽  
Author(s):  
Chuan-Ming Wang ◽  
Yang-Dong Wang ◽  
Hong-Xing Liu ◽  
Guang Yang ◽  
Yu-Jue Du ◽  
...  
Keyword(s):  
Density Functional ◽  
Van Der Waals ◽  
Functional Study ◽  
Density Functional Study ◽  
Hydrocarbon Pool ◽  
Hydrocarbon Pool Mechanism

Experimental Investigation and CFD Simulation of Hydrocarbon Pool Fire

2012 ◽  
Vol 22 (2) ◽  
pp. 201-222
Author(s):  
Pramod C. Ramteke ◽  
Akhilesh Gupta ◽  
Ravi Kumar ◽  
A. K. Gupta ◽  
Pawan K. Sharma
Keyword(s):  
Experimental Investigation ◽  
Cfd Simulation ◽  
Pool Fire ◽  
Hydrocarbon Pool

scholarly journals Stabilizing the framework of SAPO-34 zeolite toward long-term methanol-to-olefins conversion

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Liu Yang ◽  
Chang Wang ◽  
Lina Zhang ◽  
Weili Dai ◽  
Yueying Chu ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Zeolite Catalyst ◽  
Catalytic Efficiency ◽  
Dynamic Changes ◽  
Structural Dynamic ◽  
Term Stability ◽  
Long Term Stability ◽  
Hydrocarbon Pool ◽  
Intrinsic Good

AbstractAs a commercial MTO catalyst, SAPO-34 zeolite exhibits excellent recyclability probably due to its intrinsic good hydrothermal stability. However, the structural dynamic changes of SAPO-34 catalyst induced by hydrocarbon pool (HP) species and the water formed during the MTO conversion as well as its long-term stability after continuous regenerations are rarely investigated and poorly understood. Herein, the dynamic changes of SAPO-34 framework during the MTO conversion were identified by 1D 27Al, 31P MAS NMR, and 2D 31P-27Al HETCOR NMR spectroscopy. The breakage of T-O-T bonds in SAPO-34 catalyst during long-term continuous regenerations in the MTO conversion could be efficiently suppressed by pre-coking. The combination of catalyst pre-coking and water co-feeding is established to be an efficient strategy to promote the catalytic efficiency and long-term stability of SAPO-34 catalysts in the commercial MTO processes, also sheds light on the development of other high stable zeolite catalyst in the commercial catalysis.

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