Highly selective isomerization of biomass β-pinene over hierarchically acidic MCM-22 catalyst

Ma, Xuetao; Zhou, Dan; Chu, Xiangcheng; Li, Dan; Wang, Jing; Song, Wangchao; Xia, Qinghua

doi:10.1016/j.micromeso.2016.09.040

Cited by 22 publications

(16 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…293,396 Isomerization of b-pinene, as a representative of terpenes present in the essential oil of pine trees, has been attempted over MCM-22 and its hierarchical microporous-mesoporous derivatives obtained by acid post-treatment. 397 The purpose of such a reaction is to produce a mixture of limonene and camphene, compounds of particular interest in the field of cosmetics and medicine. An excellent performance was obtained over the hierarchical MCM-22, with full conversion and 93.7% selectivity to the mixture of limonene and camphene (76.2% limonene and 17.5% camphene) under the reaction conditions employed.…”

Section: Hierarchical Zeolites In Catalytic Pyrolysismentioning

confidence: 99%

From 3D to 2D zeolite catalytic materials

et al. 2018

View full text Add to dashboard Cite

Research activities and recent developments in the area of three-dimensional zeolites and their two-dimensional analogues are reviewed. Zeolites are the most important industrial heterogeneous catalysts with numerous applications. However, they suffer from limited pore sizes not allowing penetration of sterically demanding molecules to their channel systems and to active sites. We briefly highlight here the synthesis, properties and catalytic potential of three-dimensional zeolites followed by a discussion of hierarchical zeolites combining micro- and mesoporosity. The final part is devoted to two-dimensional analogues developed recently. Novel bottom-up and top-down synthetic approaches for two-dimensional zeolites, their properties, and catalytic performances are thoroughly discussed in this review.

show abstract

Section: Hierarchical Zeolites In Catalytic Pyrolysismentioning

confidence: 99%

From 3D to 2D zeolite catalytic materials

et al. 2018

View full text Add to dashboard Cite

show abstract

“…MCM-22 zeolite, synthesized in the 1990s, by the Mobile researches [1], due to its unusual pore structure, combining large 12 MR (Membered Ring) cavities and medium (10 MR channels) pores, as well as specific 2D alignment of the zeolitic layers, is under a great scientist's interest for possible application in catalysis. The up-to-date papers reporting catalytic activity of MCM-22 have shown its high efficiency in various reactions, including alkylation [2][3][4][5], aromatization [6,7], methanol-to-olefin (MTO) or -hydrocarbon (MTH) conversions [8,9], glycerol conversion [10,11], cracking reactions [12,13], Fischer-Tropsch synthesis [14], Knoevenagel condensation [15], α-pinene isomerization [16,17], and in various environmental processes [18,19].…”

Section: Introductionmentioning

confidence: 99%

Modification of MCM-22 Zeolite and Its Derivatives with Iron for the Application in N2O Decomposition

et al. 2020

View full text Add to dashboard Cite

Layered 2D zeolite MCM-22 and its delaminated derivative, ITQ-2, were modified with iron, by different methods (ion-exchange and direct synthesis), and with the use of different precursors (FeSO4∙7H2O, Fe(NO3)3∙9H2O, and [Fe3(OCOCH3)7∙OH∙2H2O]NO3 oligocations. The applied modifications were aimed at optimization of iron form in the samples (aggregation, amount, location, and reducibility), in order to achieve the highest catalytic activity in the N2O decomposition. The synthesis of the samples was verified with the use of XRD (X-Ray Diffraction), N2-sorption and ICP-OES (Inductively Coupled Plasma Optical Emission Spectroscopy) techniques, while the form of iron in the samples was investigated by UV–vis-DRS (UV–vis diffuse reflectance spectroscopy), H2-TPR (Hydrogen Temperature-Programmed Reduction) and HRTEM (High-Resolution Transmission Electron Microscopy). The highest activity in the N2O decomposition presented the sample Fe(O,IE)MCM-22, prepared by ion-exchange of MCM-22 with Fe3(III) oligocations. This activity was related to the oligomeric FexOy species (the main form of iron in the sample) and the higher loading of active species (in comparison to the modification with FeSO4∙7H2O).

show abstract

“…Increasing the diffusion enhanced the selectivity and reduced the deactivation of catalysts 90 . Mesoporous TS1 zeolite, 34 micro‐mesoporous BEA‐type zeolite, 69 and hierarchical MCM‐22 zeolite 91 were developed to increase the mass transfer and the diffusion of molecule substrates. Zeolite was synthesized using hydrothermal method from silica and alumina gels in alkaline medium at various temperatures (80‐200℃) 92 .…”

Section: Zeolite and Hierarchical Aluminosilicate Catalystsmentioning

confidence: 99%

“…Hierarchical zeolite contained mesoporous and microporous network that shorten the diffusion path and increased the mass transfer in isomerization reaction. Acid treatment for the formation of hierarchical MCM‐22 exhibited the increase of Si/Al ratio and mesoporosity resulting in high conversion of β‐pinene oxide 91 . Acid treatment partially removed Al in the framework and created mesopores.…”

Section: Zeolite and Hierarchical Aluminosilicate Catalystsmentioning

confidence: 99%

Review on heterogeneous catalysts for the synthesis of perfumery chemicals via isomerization, acetalization and hydrogenation

Hartati

Firda

Bahruji

et al. 2021

Flavour & Fragrance J

View full text Add to dashboard Cite

Synthetic fragrance has dominated the perfumery industry in recent decades due to the ability to produce perfumery ingredients on a large scale at a low cost. Extensive research in the field of synthetic perfumery chemical involved the utilization of catalysts to improve the productivity. This review will discuss recent advances of heterogeneous catalysts for the synthesis of perfumery chemicals as fragrance ingredients. Transition from homogeneous to heterogeneous catalysts will be included in order to provide insight into the benefits of heterogeneous catalysts to overcome the limitation of homogeneous reaction. Isomerization, acetalization and hydrogenation were identified as three main reactions for the synthesis of perfumery chemicals based on the number of reported work since 2000. This review will focus on α‐pinene and α‐pinene oxide as the main molecular substrates, however, different molecules, for example, linalool, citronellal and cinnamaldehyde will also be included. The synthesis, modification and possible mechanisms for the reactions involving zeolite, aluminosilicate, metal oxides, metal organic framework, monometallic and bimetallic nanoparticles as heterogeneous catalysts will be discussed. Discussion on isomerization and acetalization reactions will focus on the acidity and the porosity of the catalysts as the two main factors that determine the conversion and selectivity. For perfumery chemicals produced via hydrogenation reaction, the role of monometallic and bimetallic nanoparticles catalysts will be discussed in the chemoselective reduction of cinnamaldehyde and citronellal.

show abstract

Highly selective isomerization of biomass β-pinene over hierarchically acidic MCM-22 catalyst

Cited by 22 publications

References 27 publications

From 3D to 2D zeolite catalytic materials

From 3D to 2D zeolite catalytic materials

Modification of MCM-22 Zeolite and Its Derivatives with Iron for the Application in N2O Decomposition

Review on heterogeneous catalysts for the synthesis of perfumery chemicals via isomerization, acetalization and hydrogenation

Contact Info

Product

Resources

About