Fine tuning of the physico-chemical properties of a MIL-53(Al) type - Mesoporous alumina composite using a facile sacrificial-template synthesis approach

被引：18

作者：

Silvester, Lishil ^{[1
]}

Naim, Aishah ^{[1
]}

Fateeva, Alexandra ^{[1
]}

Postole, Georgeta ^{[2
]}

Auroux, Aline ^{[2
]}

Massin, Laurence ^{[2
]}

Gelin, Patrick ^{[2
]}

Bois, Laurence ^{[1
]}

机构：

[1] Univ Claude Bernard Lyon 1, LMI, CNRS UMR 5615, F-69622 Villeurbanne, France

[2] Univ Claude Bernard Lyon 1, Univ Lyon, IRCELYON, CNRS, F-69626 Villeurbanne, France

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 2020年 / 306卷

关键词：

Sacrificial template synthesis; MIL-53(Al); Alumina composite; Hierarchical pores; Acid-base properties; NH3 adsorption calorimetry; SOLID-STATE NMR; ORGANIC FRAMEWORK MEMBRANES; ACIDITY; SITES; ADSORPTION; CATALYSTS; ZEOLITES; SOLVENT;

D O I：

10.1016/j.micromeso.2020.110443

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Though Metal Organic Frameworks (MOF's) and MOF-derived solids have been employed in various applications, especially catalysis, there is still a constant search for better performing MOF-based hybrid catalysts. In this work, we employed sacrificial template method in synthesizing MIL-53(Al) type - porous Alumina (MA) composites that exhibit different physico-chemical and catalytic properties compared to parent solids (MIL-53 and mesoporous Al2O3). Structural investigations demonstrated that composites possess combined structure of both the parent solids. Novel composites possess hierarchical (meso- & micro-) pores, with average pore width in the range of similar to 14-16 nm. NH3 adsorption calorimetry and isopropanol test enabled deducing the possible nature and strength of acid-basic sites in composites. 'MA' composites show intermediate chemical properties and synergistic multifunctional catalytic behaviour compared to parent solids. This work reveals, for the first time, extensively tunable physico-chemical properties of a novel class of solids: "the MIL-53(Al) type - porous alumina composites" that can have a huge potential as multifunctional catalysts.

引用

页数：13

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