Effects of ammonium salts as additives in Rh-Ph3PO catalytic system on hydroformylation of mixed octenes

Dehua He; Jinyao Liu; Ye Liu; Tongen Wang; Dongcheng Pang; Yu Chen; Yu Liang; Qiming Zhu

doi:10.1023/A:1016691729146

Effects of ammonium salts as additives in Rh-Ph₃PO catalytic system on hydroformylation of mixed octenes

Dehua He
, Jinyao Liu
, Ye Liu
, Tongen Wang
, Dongcheng Pang
, Yu Chen
, Yu Liang
, Qiming Zhu

Tsinghua University

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

The effects of ammonium salts as the additives in the [Rh(CH₃COO)₂]₂-Ph₃PO catalytic system on the hydroformylation of mixed octenes have been studied. The yield of isononyl aldehydes increased when an ammonium salt such as (NH₄)₆Mo₇O₂₄·4H₂O, (NH₄)₂Cr₂O₇, (NH₄)₂CrO₄ or (NH₄)₅H₅[H₂(WO₄) ₆]·H₂O was added to [Rh(CH₃COO)₂]₂-Ph₃PO-catalyzed hydroformylation of mixed octenes. The loss of rhodium in the distillation process for separating the products and the catalyst was reduced and the concentration of Rh in the distillate decreased from 0.115 to 0.057 ppm, when an ammonium salt such as (NH₄)₂CrO₄ was added into [Rh(CH₃COO)₂]₂-Ph₃PO-catalyzed hydroformylation. The stretching vibration (2040 cm^-1) of the Rh-H bond of the active species was observed in the spectra of in situ IR. The investigation of in situ IR showed that the peak intensity of Rh-H vibration increased and the temperature range at which the Rh-H vibration peak could be observed in IR was widened when (NH₄)₆Mo₇O₂₄·4H₂O was used as additive in the system [Rh(CH₃COO)₂]₂-Ph₃PO.

Original language	English
Article number	302531
Pages (from-to)	221-224
Number of pages	4
Journal	Catalysis Letters
Volume	73
Issue number	2-4
DOIs	https://doi.org/10.1023/A:1016691729146
State	Published - May 2001
Externally published	Yes

Keywords

Additive
Ammonium salt
Hydroformylation
Mixed octenes
in situ IR

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10.1023/A:1016691729146

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@article{4a9c022eff04412c899f292309580903,

title = "Effects of ammonium salts as additives in Rh-Ph3PO catalytic system on hydroformylation of mixed octenes",

abstract = "The effects of ammonium salts as the additives in the [Rh(CH3COO)2]2-Ph3PO catalytic system on the hydroformylation of mixed octenes have been studied. The yield of isononyl aldehydes increased when an ammonium salt such as (NH4)6Mo7O24·4H2O, (NH4)2Cr2O7, (NH4)2CrO4 or (NH4)5H5[H2(WO4) 6]·H2O was added to [Rh(CH3COO)2]2-Ph3PO-catalyzed hydroformylation of mixed octenes. The loss of rhodium in the distillation process for separating the products and the catalyst was reduced and the concentration of Rh in the distillate decreased from 0.115 to 0.057 ppm, when an ammonium salt such as (NH4)2CrO4 was added into [Rh(CH3COO)2]2-Ph3PO-catalyzed hydroformylation. The stretching vibration (2040 cm-1) of the Rh-H bond of the active species was observed in the spectra of in situ IR. The investigation of in situ IR showed that the peak intensity of Rh-H vibration increased and the temperature range at which the Rh-H vibration peak could be observed in IR was widened when (NH4)6Mo7O24·4H2O was used as additive in the system [Rh(CH3COO)2]2-Ph3PO.",

keywords = "Additive, Ammonium salt, Hydroformylation, Mixed octenes, in situ IR",

author = "Dehua He and Jinyao Liu and Ye Liu and Tongen Wang and Dongcheng Pang and Yu Chen and Yu Liang and Qiming Zhu",

year = "2001",

month = may,

doi = "10.1023/A:1016691729146",

language = "英语",

volume = "73",

pages = "221--224",

journal = "Catalysis Letters",

issn = "1011-372X",

publisher = "Kluwer Academic Publishers",

number = "2-4",

}

TY - JOUR

T1 - Effects of ammonium salts as additives in Rh-Ph3PO catalytic system on hydroformylation of mixed octenes

AU - He, Dehua

AU - Liu, Jinyao

AU - Liu, Ye

AU - Wang, Tongen

AU - Pang, Dongcheng

AU - Chen, Yu

AU - Liang, Yu

AU - Zhu, Qiming

PY - 2001/5

Y1 - 2001/5

N2 - The effects of ammonium salts as the additives in the [Rh(CH3COO)2]2-Ph3PO catalytic system on the hydroformylation of mixed octenes have been studied. The yield of isononyl aldehydes increased when an ammonium salt such as (NH4)6Mo7O24·4H2O, (NH4)2Cr2O7, (NH4)2CrO4 or (NH4)5H5[H2(WO4) 6]·H2O was added to [Rh(CH3COO)2]2-Ph3PO-catalyzed hydroformylation of mixed octenes. The loss of rhodium in the distillation process for separating the products and the catalyst was reduced and the concentration of Rh in the distillate decreased from 0.115 to 0.057 ppm, when an ammonium salt such as (NH4)2CrO4 was added into [Rh(CH3COO)2]2-Ph3PO-catalyzed hydroformylation. The stretching vibration (2040 cm-1) of the Rh-H bond of the active species was observed in the spectra of in situ IR. The investigation of in situ IR showed that the peak intensity of Rh-H vibration increased and the temperature range at which the Rh-H vibration peak could be observed in IR was widened when (NH4)6Mo7O24·4H2O was used as additive in the system [Rh(CH3COO)2]2-Ph3PO.

AB - The effects of ammonium salts as the additives in the [Rh(CH3COO)2]2-Ph3PO catalytic system on the hydroformylation of mixed octenes have been studied. The yield of isononyl aldehydes increased when an ammonium salt such as (NH4)6Mo7O24·4H2O, (NH4)2Cr2O7, (NH4)2CrO4 or (NH4)5H5[H2(WO4) 6]·H2O was added to [Rh(CH3COO)2]2-Ph3PO-catalyzed hydroformylation of mixed octenes. The loss of rhodium in the distillation process for separating the products and the catalyst was reduced and the concentration of Rh in the distillate decreased from 0.115 to 0.057 ppm, when an ammonium salt such as (NH4)2CrO4 was added into [Rh(CH3COO)2]2-Ph3PO-catalyzed hydroformylation. The stretching vibration (2040 cm-1) of the Rh-H bond of the active species was observed in the spectra of in situ IR. The investigation of in situ IR showed that the peak intensity of Rh-H vibration increased and the temperature range at which the Rh-H vibration peak could be observed in IR was widened when (NH4)6Mo7O24·4H2O was used as additive in the system [Rh(CH3COO)2]2-Ph3PO.

KW - Additive

KW - Ammonium salt

KW - Hydroformylation

KW - Mixed octenes

KW - in situ IR

UR - https://www.scopus.com/pages/publications/0035353452

U2 - 10.1023/A:1016691729146

DO - 10.1023/A:1016691729146

M3 - 文章

AN - SCOPUS:0035353452

SN - 1011-372X

VL - 73

SP - 221

EP - 224

JO - Catalysis Letters

JF - Catalysis Letters

IS - 2-4

M1 - 302531

ER -

Effects of ammonium salts as additives in Rh-Ph₃PO catalytic system on hydroformylation of mixed octenes

Abstract

Keywords

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