Exploring the void structure and activity of RUB-39 based expanded materials using the hydroconversion of decane

Tijsebaert, Bart; Henry, Mathieu; Gies, Hermann; Xiao, Feng‐Shou; Zhang, Weiping; Bao, Xinhe; Imai, Hiroyuki; Tatsumi, Takashi; Müller, Ulrich; Yilmaz, Bilge; Jacobs, Pierre; Vos, Dirk De

doi:10.1016/j.jcat.2011.05.022

Cited by 21 publications

(13 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…RUB-41, framework type code RRO, has been synthesized as a calcination product using the layered silicate, RUB-39, as precursor. The insertion of Al [169,197] and B [158] functional T-atoms into the layered precursor as well as its condensation to 3D framework silicate zeolites has been achieved. Silylation of the layered precursor RUB-39 with dichloro-dimethylsilane (DCDMS) providing layer interconnection the led to the formation of IEZ-RRO [168].…”

Section: D Layers With Sti and Rro Framework Topologymentioning

confidence: 99%

Two-Dimensional Zeolite Materials: Structural and Acidity Properties

Schulman

Liu

2020

Materials

View full text Add to dashboard Cite

Zeolites are generally defined as three-dimensional (3D) crystalline microporous aluminosilicates in which silicon (Si4+) and aluminum (Al3+) are coordinated tetrahedrally with oxygen to form large negative lattices and consequent Brønsted acidity. Two-dimensional (2D) zeolite nanosheets with single-unit-cell or near single-unit-cell thickness (~2–3 nm) represent an emerging type of zeolite material. The extremely thin slices of crystals in 2D zeolites produce high external surface areas (up to 50% of total surface area compared to ~2% in micron-sized 3D zeolite) and expose most of their active sites on external surfaces, enabling beneficial effects for the adsorption and reaction performance for processing bulky molecules. This review summarizes the structural properties of 2D layered precursors and 2D zeolite derivatives, as well as the acidity properties of 2D zeolite derivative structures, especially in connection to their 3D conventional zeolite analogues’ structural and compositional properties. The timeline of the synthesis and recognition of 2D zeolites, as well as the structure and composition properties of each 2D zeolite, are discussed initially. The qualitative and quantitative measurements on the acid site type, strength, and accessibility of 2D zeolites are then presented. Future research and development directions to advance understanding of 2D zeolite materials are also discussed.

show abstract

Section: D Layers With Sti and Rro Framework Topologymentioning

confidence: 99%

Two-Dimensional Zeolite Materials: Structural and Acidity Properties

Schulman

Liu

2020

Materials

View full text Add to dashboard Cite

show abstract

“…[19][20][21] This modication strategy can be seen as a way to create new zeolitic frameworks that cannot be obtained through direct synthesis and have their own distinct pore systems with functionalized linkers and corresponding catalytic properties. 4,14,22 For instance, in the case of the layered silicate RUB-36, Al could be incorporated in the layered precursor via direct synthesis. Interlayer expansion with a silylating agent like dichlorodimethylsilane (DCDMS) followed by calcination results in a zeolite named Al-COE-4.…”

Section: Introductionmentioning

confidence: 99%

A new class of solid Lewis acid catalysts based on interlayer expansion of layered silicates of the RUB-36 type with heteroatoms

et al. 2014

Self Cite

View full text Add to dashboard Cite

show abstract

“…The silylation process can be carried out on both as-made layered zeolite and swollen materials, depending on the interlayer space and the size of silane molecules. 29,30 These modified layered zeolites showed higher activity than their corresponding 3D type zeolite in acid catalyzed reactions 31,32 or liquid phase oxidation reactions, 19,25,33 because the increased pore size or enlarged external surface area favored diffusion of substrates and accessibility to active sites.…”

Section: Introductionmentioning

confidence: 99%

Structural diversity of lamellar zeolite Nu-6(1)—postsynthesis of delaminated analogues

Jia

et al. 2014

Dalton Trans.

View full text Add to dashboard Cite

Nu-6(1) zeolite, the lamellar precursor of NSI topology, was firstly synthesized with 4'4-bipyridine as the structure-directing agent (SDA) and then subjected to HCl-EtOH treatment for the purpose of structural modification. Interlayer deconstruction and reconstruction took place alternately in this acid treatment. An intermediate named ECNU-4 was separated at the initial stage of this continuous treatment process, which exhibited a special X-ray diffraction pattern without obvious reflection peaks at low angles. The zeolitic structure in the intralayer sheets was supposed to be well preserved in ECNU-4, whereas the interlayer structure became extremely disordered. The ECNU-4 intermediate showed structural diversity. It was converted into the reconstructed and interlayer expanded zeolite IEZ-NSI without an external silicon source by prolonging the HCl-EtOH treatment to 24 h. Moreover, with a partially delaminated structure, ECNU-4 was easily interlayer swollen at room temperature with cetyltrimethyl ammonium bromide in the presence of tetrapropyl ammonium hydroxide. The swollen material was further sonicated to yield a more deeply delaminated zeolite, Del-Nu-6. ECNU-4 and Del-Nu-6 differed in delamination degree, structural disordering and textural properties, especially surface area.

show abstract

Exploring the void structure and activity of RUB-39 based expanded materials using the hydroconversion of decane

Cited by 21 publications

References 23 publications

Two-Dimensional Zeolite Materials: Structural and Acidity Properties

Two-Dimensional Zeolite Materials: Structural and Acidity Properties

A new class of solid Lewis acid catalysts based on interlayer expansion of layered silicates of the RUB-36 type with heteroatoms

Structural diversity of lamellar zeolite Nu-6(1)—postsynthesis of delaminated analogues

Contact Info

Product

Resources

About