Abstract
| Original language | English |
|---|---|
| Journal | Environmental Chemistry Letters |
| Volume | 14 |
| Issue number | 3 |
| Pages (from-to) | 359-365 |
| Number of pages | 7 |
| ISSN | 1610-3653 |
| DOIs | |
| Publication status | Published - 2016 |
Keywords
- Homogeneous catalysis
- Hydrogen peroxide
- Oxygen
- Pincer ligands
- Ruthenium
Cite this
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Efficient hydrogen peroxide decomposition to oxygen and water catalysed by a ruthenium pincer complex. / Nielsen, Martin.
In: Environmental Chemistry Letters, Vol. 14, No. 3, 2016, p. 359-365.Research output: Contribution to journal › Letter › Research › peer-review
TY - JOUR
T1 - Efficient hydrogen peroxide decomposition to oxygen and water catalysed by a ruthenium pincer complex
AU - Nielsen, Martin
PY - 2016
Y1 - 2016
N2 - Hydrogen peroxide decomposition is a major issue in medicine, energy, and environmental sciences. For example, findings could lead to the development of efficient H2O2 removal systems to clean wastewaters. Here I tested several homogeneous catalysts for H2O2 decomposition. I found that a dihydride version of a ruthenium complex coordinated by a phosphorous–nitrogen–phosphorus pincer ligand with isopropyl substituents on the phosphorus (PNPiPr) was superior to the hydride chloride congener. This is in line with previous activity studies with PNPiPr ruthenium catalysts. Moreover, no additives are necessary, further enhancing the potential scope of this system. By the use of the homogeneous catalyst Ru(H)2(PNPiPr)CO, it is possible to obtain turnover frequencies reaching 180,000 h−1 and turnover numbers more than 14,000 in a neutral hydrogen peroxide aqueous solution at 25 °C. Overall, findings reveal an efficient and stable system for hydrogen peroxide decomposition to oxygen and water under mild conditions.
AB - Hydrogen peroxide decomposition is a major issue in medicine, energy, and environmental sciences. For example, findings could lead to the development of efficient H2O2 removal systems to clean wastewaters. Here I tested several homogeneous catalysts for H2O2 decomposition. I found that a dihydride version of a ruthenium complex coordinated by a phosphorous–nitrogen–phosphorus pincer ligand with isopropyl substituents on the phosphorus (PNPiPr) was superior to the hydride chloride congener. This is in line with previous activity studies with PNPiPr ruthenium catalysts. Moreover, no additives are necessary, further enhancing the potential scope of this system. By the use of the homogeneous catalyst Ru(H)2(PNPiPr)CO, it is possible to obtain turnover frequencies reaching 180,000 h−1 and turnover numbers more than 14,000 in a neutral hydrogen peroxide aqueous solution at 25 °C. Overall, findings reveal an efficient and stable system for hydrogen peroxide decomposition to oxygen and water under mild conditions.
KW - Homogeneous catalysis
KW - Hydrogen peroxide
KW - Oxygen
KW - Pincer ligands
KW - Ruthenium
U2 - 10.1007/s10311-016-0576-0
DO - 10.1007/s10311-016-0576-0
M3 - Letter
VL - 14
SP - 359
EP - 365
JO - Environmental Chemistry Letters
JF - Environmental Chemistry Letters
SN - 1610-3653
IS - 3
ER -