Surface area and pore texture of catalysts

Leofanti, G.; Padovan, M.; Tozzola, G.; Venturelli, B

doi:10.1016/s0920-5861(98)00050-9

Cited by 1,639 publications

(842 citation statements)

References 56 publications

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“…3 shows the nitrogen adsorption-desorption isotherms of protonated and sulphated AlMCM-41. The nitrogen adsorption-desorption isotherms of both types of samples possess the typical irreversible type IV adsorption isotherm with type H4 hysteresis loop in accordance with IUPAC recommendations [23]. It shows that the resultant MCM-41 materials possess uniform slit-shaped mesopores.…”

Section: Physical Propertiessupporting

confidence: 71%

Generation of Brönsted acidity in AlMCM-41 by sulphation for enhanced liquid phase tert-butylation of phenol

Nur

Wong

et al. 2007

Applied Catalysis A: General

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Section: Physical Propertiessupporting

confidence: 71%

Generation of Brönsted acidity in AlMCM-41 by sulphation for enhanced liquid phase tert-butylation of phenol

Nur

Wong

et al. 2007

Applied Catalysis A: General

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“…Using the formulas based on the isotherms of Z5-S and Z5-M, similar BET surface area, mesopore volume and micropore volume can be obtained, as shown in Table 1. However, in the sorption isotherm of Z5-N, there is a hysteresis loop which differs from that of Z5-M or Z5-S, implying the presence of slit pores [19]. The presence of mesopore in Z5-N can also be verified by the BJH mesopore size distributions, as shown in Fig.…”

Section: Catalyst Characterizationmentioning

confidence: 66%

Influence of crystal size of HZSM-5 on hydrodeoxygenation of eugenol in aqueous phase

Xing

Zhou

et al. 2014

Catalysis Communications

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a b s t r a c t a r t i c l e i n f oHydrodeoxygenation of eugenol to hydrocarbons in aqueous phase can be catalyzed by the combination of Pd/C and HZSM-5. In this paper, micro-, submicro-and nano-sized HZSM-5 samples were chosen as catalysts to investigate the influence of crystal size of HZSM-5 on the hydrolysis and dehydration. It was found that the formation rates of hydrocarbons were correlated with the total acidic sites of the submicro-and nano-sized HZSM-5 samples; while for the micro-sized sample, a much lower hydrocarbon formation rate was observed. Meanwhile, HZSM-5 with larger crystal size showed a lower hydrocarbon formation rate even with higher acid density.

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“…Figure 7 shows adsorption-desorption isotherms corresponding to the different samples. According to the IUPAC classification [113][114], while the SSR sample shows a type III isotherm, the SAH sample presents a type II isotherm which can be attributed to a monolayer-multilayer adsorption on an open external surface of macroporous adsorbents. This sample shows a hysteresis loop type H3, which doesn't exhibit a limiting adsorption at high P/Po values.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of advanced ceramics by hydrothermal crystallization and modified related methods

Ortíz-Landeros¹,

Gómez-Yáñez²,

López-Juárez³

et al. 2012

J Adv Ceram

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Abstract:The present article aims to give a brief overview about the advantages of the hydrothermal crystallization method for the synthesis of advanced ceramics. Emphasis is given, not only on the conventional hydrothermal crystallization, but also on some of its variants; such as ultrasound-assisted, electrochemical-assisted, microwave-assisted and surfactant-assisted hydrothermal methods which open up new opportunities for the synthesis of ceramic materials with novel properties demanded for advanced applications. In the current work the synthesis of barium titanate (BaTiO 3 ), lithium metasilicate (Li 2 SiO 3 ) and sodium-potassium niobate (Na, K)NbO 3 powders are reported as cases of study.

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Surface area and pore texture of catalysts

Cited by 1,639 publications

References 56 publications

Generation of Brönsted acidity in AlMCM-41 by sulphation for enhanced liquid phase tert-butylation of phenol

Generation of Brönsted acidity in AlMCM-41 by sulphation for enhanced liquid phase tert-butylation of phenol

Influence of crystal size of HZSM-5 on hydrodeoxygenation of eugenol in aqueous phase

Synthesis of advanced ceramics by hydrothermal crystallization and modified related methods

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