Effect of the crystal size on the activity of ZSM-5 catalysts in various reactions

Herrmann, C.; Haas, J.; Fetting, F.

doi:10.1016/s0166-9834(00)82868-7

Cited by 67 publications

(24 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This phenomenon can contribute essentially to the activity and selectivity control. Actually, the size effect was demonstrated for the inorganic solid acid catalysts, such as SAPO‐34, and H‐ZSM‐5 , . In general, the reduction of the particle size from the micrometer to the nanometer scale leads to significant changes in physicochemical properties of a solid catalyst as well as in its performance.…”

Section: Introductionmentioning

confidence: 99%

Tuning the Catalytic Performance of Novel Composites Based on ZIF‐8 and Nafen through Dimensional and Concentration Effects in the Synthesis of Propylene Glycol Methyl Ether

et al. 2019

View full text Add to dashboard Cite

Zeolitic imidazolate framework (ZIF‐8, Zn(2‐meIm)2) and composites based on ZIF‐8 and alumina nanofibers (NafenTM), i.e. ZIF‐8/Nafen, were demonstrated to be efficient heterogeneous catalysts for the reaction of methanol with propylene oxide to produce propylene glycol methyl ether (PGME), which is a member of the family of glycol ether solvents used for a wide variety of consumer products and industrial applications. Both the reaction rate and the selectivity toward PGME were found to decrease with increasing crystal size of the ZIF‐8 material, which was related to the change in the number of basic sites and their accessibility. The investigation of ZIF‐8/Nafen composites revealed the dependence of their catalytic performance on the amount of the ZIF‐8 component. In particular, the activity was affected by the crystal size of the ZIF‐8 material and the nature of acid‐base sites in its framework.

show abstract

Section: Introductionmentioning

confidence: 99%

Tuning the Catalytic Performance of Novel Composites Based on ZIF‐8 and Nafen through Dimensional and Concentration Effects in the Synthesis of Propylene Glycol Methyl Ether

et al. 2019

View full text Add to dashboard Cite

show abstract

“…It is wildly recognized that Al atoms are well distributed in nanoscale ZSM-5. In contrast, Al atoms in ZSM-5 with larger crystal size are distributed unevenly [52]. In Na-ZSM-5, the negative charges of ≡AleOeSi≡ are balanced by Na þ , and Cu 2þ that can exchange with Na þ sites is related to the framework Al.…”

Section: Discussionmentioning

confidence: 96%

Effect of the crystal size of Cu-ZSM-5 on the catalytic performance in N2O decomposition

Meng

Lin

2015

Materials Chemistry and Physics

View full text Add to dashboard Cite

“…This sample has a typical appearance characterized by the presence of angular shapes of different diameters and irregular particles of varying sizes ( figure 4(A)). The physical properties of silica present in RHA samples are responsible for the shape of irregular-sized particles, and this characteristic is also observed in particles that have undergone rapid cooling [80]. The combustion conditions of RHAs in the thermoelectric power plants determine the morphology of the particles.…”

Section: Morphologymentioning

confidence: 99%

Comparative study using different external sources of aluminum on the zeolites synthesis from rice husk ash

Klunk

Das

Dasgupta

et al. 2020

Mater. Res. Express

View full text Add to dashboard Cite

Rice husk is considered as a waste in the rice industry but is proficient in manufacturing different materials, such as zeolites, which is produced in large quantities all over the world, for example in Brazil. Zeolite is an adsorbent support material, which can be synthesized from rice husk ash (RHA) with external sources of aluminium (ESA). The scientific community has been conducting several measures to minimize the environmental impacts caused by greenhouse gases. Several mitigation processes are presently investigated, which includes carbon dioxide injections into adsorbent materials (e.g. zeolites). The efficiency of this technology involves a zeolitic material with high crystallinity and high concentrations of SiO 2 and Al 2 O 3 (aluminosilicates). In the present work, zeolites have been synthesized from rice husk ash (SiO 2 source) and external aluminium sources (Al 2 O 3 -alumina, gibbsite and metakaolin) to fulfill that purpose. With the aid of XRF, XRD, SEM/ EDS and FTIR techniques, the zeolitic material was characterized in two distinct crystalline phases: Mordenite and ZSM-5. The synthesis was carried out by the ideal addition of ESA (2.5 g) to RHA. According to the literature, the zeolitic materials formed by the mixture of Mordenite and ZSM-5 can be availed for gas separation and greenhouse gas storage.

show abstract

Effect of the crystal size on the activity of ZSM-5 catalysts in various reactions

Cited by 67 publications

References 14 publications

Tuning the Catalytic Performance of Novel Composites Based on ZIF‐8 and Nafen through Dimensional and Concentration Effects in the Synthesis of Propylene Glycol Methyl Ether

Tuning the Catalytic Performance of Novel Composites Based on ZIF‐8 and Nafen through Dimensional and Concentration Effects in the Synthesis of Propylene Glycol Methyl Ether

Effect of the crystal size of Cu-ZSM-5 on the catalytic performance in N2O decomposition

Comparative study using different external sources of aluminum on the zeolites synthesis from rice husk ash

Contact Info

Product

Resources

About