Ti-MWW Catalysts for Propylene Oxide Production: Influence of Si/Ti Ratio and Calcination Conditions

Matias Alvear; Christoph Schmidt; Ole Reinsdorf; Edgard Lebron-Rodrigez; Abdullah Al Abdulghani; Ive Hermans; Markus Peurla; Mika Lastusaari; Kari Eränen; Dmitry Yu Murzin; Narendra Kumar; Tapio Salmi

doi:10.1007/s10562-023-04350-x

Ti-MWW Catalysts for Propylene Oxide Production: Influence of Si/Ti Ratio and Calcination Conditions

Matias Alvear
, Christoph Schmidt
, Ole Reinsdorf
, Edgard Lebron-Rodrigez
, Abdullah Al Abdulghani
, Ive Hermans
, Markus Peurla
, Mika Lastusaari
, Kari Eränen
, Dmitry Yu Murzin
, Narendra Kumar
, Tapio Salmi^*

^*Korresponderande författare för detta arbete

Forskningsoutput: Tidskriftsbidrag › Artikel › Vetenskaplig › Peer review

9 Citeringar (Scopus)

165 Nedladdningar (Pure)

Sammanfattning

Titanium silicates of MWW structures with different Si/Ti ratios were prepared via hydrothermal synthesis using piperidine as the structure directing agent and boric acid as the crystallization agent. All the syntheses resulted in highly crystalline materials independent of the Si/Ti ratio. The observed morphology showed MWW-like well-defined thin hexagonal platelets. The synthesized Ti-MWW materials exhibited higher surface areas and partial meso-porosity compared to the commercial TS-1 catalyst. The coordination of the Ti-species was investigated by UV–vis- and IR-spectroscopy. The MWW titanium silicates were tested for the catalytic performance in the epoxidation of propylene in a laboratory-scale trickle bed reactor to compare their clear different physico-chemical properties with the commercial TS-1. The synthesized Ti-MWW materials showed significantly higher catalytic activities, up to 3.5 times, using acetonitrile as the solvent and enhanced epoxide selectivities partially up to 100% in methanol unlike TS-1. The effect of the Ti content in the MWW and the calcination conditions were investigated in propylene epoxidation, revealing the beneficial effect of a lower calcination temperature and an increased Ti content on the activity. The catalytic results were correlated with the physico-chemical properties of the synthesized materials.

Originalspråk	Engelska
Sidor (från-till)	834-845
Tidskrift	Catalysis Letters
Volym	154
Nummer	3
DOI	https://doi.org/10.1007/s10562-023-04350-x
Status	Publicerad - mars 2024
MoE-publikationstyp	A1 Tidskriftsartikel-refererad

Finansiering

This research work is part of the activities financed by Academy of Finland through the Academy Professor grants 319002, 320115, 345053 (T.Salmi and M.Alvear) and partially the Fortum and Neste Foundation for the grant 20210010 (C. Schmidt). Transmission electron microscopy images were recorded at the Institute of Biomedicine, University of Turku. This research work is part of the activities financed by Academy of Finland through the Academy Professor grants 319002, 320115, 345053 (T.Salmi and M.Alvear) and partially the Fortum and Neste Foundation for the grant 20210010 (C. Schmidt). Transmission electron microscopy images were recorded at the Institute of Biomedicine, University of Turku.

Nyckelord

Propene
Titanium-based catalyst
Epoxidation

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10.1007/s10562-023-04350-xLicens: CC BY

s10562-023-04350-xSlutlig publicerad version, 1,63 MBLicens: CC BY

https://urn.fi/URN:NBN:fi-fe2024040113816

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title = "Ti-MWW Catalysts for Propylene Oxide Production: Influence of Si/Ti Ratio and Calcination Conditions",

abstract = "Titanium silicates of MWW structures with different Si/Ti ratios were prepared via hydrothermal synthesis using piperidine as the structure directing agent and boric acid as the crystallization agent. All the syntheses resulted in highly crystalline materials independent of the Si/Ti ratio. The observed morphology showed MWW-like well-defined thin hexagonal platelets. The synthesized Ti-MWW materials exhibited higher surface areas and partial meso-porosity compared to the commercial TS-1 catalyst. The coordination of the Ti-species was investigated by UV{\textendash}vis- and IR-spectroscopy. The MWW titanium silicates were tested for the catalytic performance in the epoxidation of propylene in a laboratory-scale trickle bed reactor to compare their clear different physico-chemical properties with the commercial TS-1. The synthesized Ti-MWW materials showed significantly higher catalytic activities, up to 3.5 times, using acetonitrile as the solvent and enhanced epoxide selectivities partially up to 100\% in methanol unlike TS-1. The effect of the Ti content in the MWW and the calcination conditions were investigated in propylene epoxidation, revealing the beneficial effect of a lower calcination temperature and an increased Ti content on the activity. The catalytic results were correlated with the physico-chemical properties of the synthesized materials. Graphical Abstract: (Figure presented.)",

keywords = "Epoxidation, Propene, Titanium-based catalyst, Propene, Titanium-based catalyst, Epoxidation",

author = "Matias Alvear and Christoph Schmidt and Ole Reinsdorf and Edgard Lebron-Rodrigez and \{Al Abdulghani\}, Abdullah and Ive Hermans and Markus Peurla and Mika Lastusaari and Kari Er{\"a}nen and Murzin, \{Dmitry Yu\} and Narendra Kumar and Tapio Salmi",

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doi = "10.1007/s10562-023-04350-x",

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T2 - Influence of Si/Ti Ratio and Calcination Conditions

AU - Alvear, Matias

AU - Schmidt, Christoph

AU - Reinsdorf, Ole

AU - Lebron-Rodrigez, Edgard

AU - Al Abdulghani, Abdullah

AU - Hermans, Ive

AU - Peurla, Markus

AU - Lastusaari, Mika

AU - Eränen, Kari

AU - Murzin, Dmitry Yu

AU - Kumar, Narendra

AU - Salmi, Tapio

PY - 2024/3

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N2 - Titanium silicates of MWW structures with different Si/Ti ratios were prepared via hydrothermal synthesis using piperidine as the structure directing agent and boric acid as the crystallization agent. All the syntheses resulted in highly crystalline materials independent of the Si/Ti ratio. The observed morphology showed MWW-like well-defined thin hexagonal platelets. The synthesized Ti-MWW materials exhibited higher surface areas and partial meso-porosity compared to the commercial TS-1 catalyst. The coordination of the Ti-species was investigated by UV–vis- and IR-spectroscopy. The MWW titanium silicates were tested for the catalytic performance in the epoxidation of propylene in a laboratory-scale trickle bed reactor to compare their clear different physico-chemical properties with the commercial TS-1. The synthesized Ti-MWW materials showed significantly higher catalytic activities, up to 3.5 times, using acetonitrile as the solvent and enhanced epoxide selectivities partially up to 100% in methanol unlike TS-1. The effect of the Ti content in the MWW and the calcination conditions were investigated in propylene epoxidation, revealing the beneficial effect of a lower calcination temperature and an increased Ti content on the activity. The catalytic results were correlated with the physico-chemical properties of the synthesized materials. Graphical Abstract: (Figure presented.)

AB - Titanium silicates of MWW structures with different Si/Ti ratios were prepared via hydrothermal synthesis using piperidine as the structure directing agent and boric acid as the crystallization agent. All the syntheses resulted in highly crystalline materials independent of the Si/Ti ratio. The observed morphology showed MWW-like well-defined thin hexagonal platelets. The synthesized Ti-MWW materials exhibited higher surface areas and partial meso-porosity compared to the commercial TS-1 catalyst. The coordination of the Ti-species was investigated by UV–vis- and IR-spectroscopy. The MWW titanium silicates were tested for the catalytic performance in the epoxidation of propylene in a laboratory-scale trickle bed reactor to compare their clear different physico-chemical properties with the commercial TS-1. The synthesized Ti-MWW materials showed significantly higher catalytic activities, up to 3.5 times, using acetonitrile as the solvent and enhanced epoxide selectivities partially up to 100% in methanol unlike TS-1. The effect of the Ti content in the MWW and the calcination conditions were investigated in propylene epoxidation, revealing the beneficial effect of a lower calcination temperature and an increased Ti content on the activity. The catalytic results were correlated with the physico-chemical properties of the synthesized materials. Graphical Abstract: (Figure presented.)

KW - Epoxidation

KW - Propene

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KW - Titanium-based catalyst

KW - Epoxidation

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Ti-MWW Catalysts for Propylene Oxide Production: Influence of Si/Ti Ratio and Calcination Conditions

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