Kinetics of the reactions of the light alkenes over SAPO-34

Zhou, Hongyu; Wang, Yao; Wei, Fei; Wang, Dezheng; Wang, Zhanwen

doi:10.1016/j.apcata.2008.06.033

Cited by 81 publications

(53 citation statements)

References 27 publications

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“…Provided that Gibbs free energy of stable elementary substance is 0 in the standard state, mole Gibbs free energy of a pure compound at certain temperature should be standard Gibbs free energy change from the elementary substance to the compound at the same temperature, namely the standard generation Gibbs free energy of the compound ΔGf θ . Based on the above principle, minimization of total Gibbs free energy for the ideal system can be expressed by Equation (2) [22].…”

Section: Minimization Of Gibbs Free Energymentioning

confidence: 99%

Thermodynamic equilibrium distribution of light olefins in catalytic pyrolysis

Zhang

Liu

et al. 2016

Applied Catalysis A: General

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Section: Minimization Of Gibbs Free Energymentioning

confidence: 99%

Thermodynamic equilibrium distribution of light olefins in catalytic pyrolysis

Zhang

Liu

et al. 2016

Applied Catalysis A: General

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“…In Table 5 56 showing that the rate of conversion of ethylene on SAPO-34 is much lower than propylene and butene. In summary, at the start of the reaction, after the induction period, the olefins formed at the top of the bed are transformed along the catalytic bed with the fresh catalyst towards the equilibrium distribution.…”

Section: Shape-selectivity and Thermodymanic Equilibrium Of Olefinsmentioning

confidence: 99%

Methanol to olefins: activity and stability of nanosized SAPO-34 molecular sieves and control of selectivity by silicon distribution

Martínez‐Triguero

Concepción

et al. 2013

Phys. Chem. Chem. Phys.

122

110

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Royal Society of ChemistryLi, Z.; Martínez Triguero, LJ.; Concepción Heydorn, P.; Yu, J.; Corma Canós, A. (2013 AbstractNanoSAPO-34 molecular sieve synthesized in microwave environment with 20nm of crystal size showed higher lifetime than SAPO-34 prepared by conventional hydrothermal method in the reaction of methanol to olefins. It has been found that silicon distribution strongly affects lifetime and selectivity. Thus, silicon at the border of the silicon islands gives higher lifetime and lower C2/C3 ratio. This change in activity and selectivity is better explained in terms of different silicon distribution than on preferential diffusion of ethene through the 8MR pores and agrees with transition-state selectivity. The effects of equilibrium of olefins and deactivation by coke were isolated,showing that after full formation of hydrocarbon pool, selectivity is independent of deactivation by coke.

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“…In 14 this regard, MTP process offers a promising route, as methanol can 15 be readily obtained from syngas by well-established technologies 16 (ICI process, Lurgi process) [4]. 17 A rigorous MTP kinetic model is desired for the reactor design 18 and process optimization. However, the MTP reaction proceeds 19 through an extremely complex reaction mechanism, including 20 methanol cracking; methylation of methanol with olefins; 21 oligomerization, cracking, isomerization, aromatization and hy- 22 drogenation of olefins [5][6][7], which make the kinetic study a tough 23 work.…”

mentioning

confidence: 99%