Selective oxidation of propylene to propylene oxide over Ti-MCM-41 supporting metal nitrate

Takayuki Miyaji; Peng Wu; Takashi Tatsumi

doi:10.1016/S0920-5861(01)00427-8

Selective oxidation of propylene to propylene oxide over Ti-MCM-41 supporting metal nitrate

Takayuki Miyaji
, Peng Wu
, Takashi Tatsumi^*

^*此作品的通讯作者

Yokohama National University

科研成果: 期刊稿件 › 会议文章 › 同行评审

22 引用（Scopus）

摘要

The direct gas-phase oxidation of propylene with molecular oxygen was carried out over Ti-MCM-41 impregnated with metal nitrates to produce propylene oxide (PO) selectively. The effects of Ti-loading on MCM-41, nitrate additives, acid treatment of the support, and the presence of molecular oxygen were investigated. The PO yield increased with increasing Ti content of Ti-MCM-41 and reached a maximum at an optimum Si/Ti ratio of 100. Calcium nitrate was the most suitable additive among various nitrates of alkali and alkaline earth metals investigated, and the acid treatment of Ti-MCM-41 effectively improved its catalytic performance for the PO formation. The presence of both nitrate and molecular oxygen was essential for the PO formation. A synergetic mechanism between the Ti species and metal nitrate was proposed to be responsible for the selective formation of PO.

源语言	英语
页（从-至）	169-176
页数	8
期刊	Catalysis Today
卷	71
期	1-2
DOI	https://doi.org/10.1016/S0920-5861(01)00427-8
出版状态	已出版 - 15 11月 2001
已对外发布	是
活动	Challenges in Alkane Activation and Selective Oxidation (UEDA S.I.) - Yokohama, 日本期限: 30 11月 2001 → 30 11月 2001

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title = "Selective oxidation of propylene to propylene oxide over Ti-MCM-41 supporting metal nitrate",

abstract = "The direct gas-phase oxidation of propylene with molecular oxygen was carried out over Ti-MCM-41 impregnated with metal nitrates to produce propylene oxide (PO) selectively. The effects of Ti-loading on MCM-41, nitrate additives, acid treatment of the support, and the presence of molecular oxygen were investigated. The PO yield increased with increasing Ti content of Ti-MCM-41 and reached a maximum at an optimum Si/Ti ratio of 100. Calcium nitrate was the most suitable additive among various nitrates of alkali and alkaline earth metals investigated, and the acid treatment of Ti-MCM-41 effectively improved its catalytic performance for the PO formation. The presence of both nitrate and molecular oxygen was essential for the PO formation. A synergetic mechanism between the Ti species and metal nitrate was proposed to be responsible for the selective formation of PO.",

keywords = "Direct gas-phase oxidation, Metal nitrates, Ti-MCM-41",

author = "Takayuki Miyaji and Peng Wu and Takashi Tatsumi",

year = "2001",

month = nov,

day = "15",

doi = "10.1016/S0920-5861(01)00427-8",

language = "英语",

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pages = "169--176",

journal = "Catalysis Today",

issn = "0920-5861",

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note = "Challenges in Alkane Activation and Selective Oxidation (UEDA S.I.) ; Conference date: 30-11-2001 Through 30-11-2001",

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TY - JOUR

T1 - Selective oxidation of propylene to propylene oxide over Ti-MCM-41 supporting metal nitrate

AU - Miyaji, Takayuki

AU - Wu, Peng

AU - Tatsumi, Takashi

PY - 2001/11/15

Y1 - 2001/11/15

N2 - The direct gas-phase oxidation of propylene with molecular oxygen was carried out over Ti-MCM-41 impregnated with metal nitrates to produce propylene oxide (PO) selectively. The effects of Ti-loading on MCM-41, nitrate additives, acid treatment of the support, and the presence of molecular oxygen were investigated. The PO yield increased with increasing Ti content of Ti-MCM-41 and reached a maximum at an optimum Si/Ti ratio of 100. Calcium nitrate was the most suitable additive among various nitrates of alkali and alkaline earth metals investigated, and the acid treatment of Ti-MCM-41 effectively improved its catalytic performance for the PO formation. The presence of both nitrate and molecular oxygen was essential for the PO formation. A synergetic mechanism between the Ti species and metal nitrate was proposed to be responsible for the selective formation of PO.

AB - The direct gas-phase oxidation of propylene with molecular oxygen was carried out over Ti-MCM-41 impregnated with metal nitrates to produce propylene oxide (PO) selectively. The effects of Ti-loading on MCM-41, nitrate additives, acid treatment of the support, and the presence of molecular oxygen were investigated. The PO yield increased with increasing Ti content of Ti-MCM-41 and reached a maximum at an optimum Si/Ti ratio of 100. Calcium nitrate was the most suitable additive among various nitrates of alkali and alkaline earth metals investigated, and the acid treatment of Ti-MCM-41 effectively improved its catalytic performance for the PO formation. The presence of both nitrate and molecular oxygen was essential for the PO formation. A synergetic mechanism between the Ti species and metal nitrate was proposed to be responsible for the selective formation of PO.

KW - Direct gas-phase oxidation

KW - Metal nitrates

KW - Ti-MCM-41

UR - https://www.scopus.com/pages/publications/0035891184

U2 - 10.1016/S0920-5861(01)00427-8

DO - 10.1016/S0920-5861(01)00427-8

M3 - 会议文章

AN - SCOPUS:0035891184

SN - 0920-5861

VL - 71

SP - 169

EP - 176

JO - Catalysis Today

JF - Catalysis Today

IS - 1-2

T2 - Challenges in Alkane Activation and Selective Oxidation (UEDA S.I.)

Y2 - 30 November 2001 through 30 November 2001

ER -

Selective oxidation of propylene to propylene oxide over Ti-MCM-41 supporting metal nitrate

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