Catalytic Hydrolysis of 4-Nitrophenyl Phosphate by Lanthanum(III)-Hectorite

Langmuir ◽  
2003 ◽  
Vol 19 (6) ◽  
pp. 2188-2192 ◽  
Author(s):  
Steven T. Frey ◽  
Benjamin M. Hutchins ◽  
Brian J. Anderson ◽  
Teresa K. Schreiber ◽  
Michael E. Hagerman
Keyword(s):  
Catalytic Hydrolysis ◽  
Nitrophenyl Phosphate ◽  
Hydrolysis Of

Hydrolysis of BNPP Catalyzed by the Dodecyliminodiacetate Nickel(II) and Copper(II) Complexes

2013 ◽  
Vol 749 ◽  
pp. 507-511
Author(s):  
Sheng Tian Huang ◽  
Shen Xin Li ◽  
Ying Wang ◽  
Song Wu ◽  
Wei Hu
Keyword(s):  
Kinetic Parameter ◽  
Temperature Effect ◽  
Absorption Spectra ◽  
Reaction System ◽  
Catalytic Hydrolysis ◽  
Specific Absorption ◽  
Reaction Systems ◽  
Nitrophenyl Phosphate ◽  
Hydrolytic Reaction ◽  
Hydrolysis Of

Two novel dodecyliminodiacetate nickel (II) and copper (II) complexes were synthesized and characterized, and these complexes were used as mimic hydrolytic in catalytic hydrolysis of bis (p-nitrophenyl) phosphate (BNPP). The analysis of specific absorption spectra of the hydrolytic reaction systems indicated that the catalytic hydrolysis involved the key intermediates formed by BNPP with nickel (II) complexes. The kinetic parameter of BNPP catalytic hydrolysis has been calculated and the temperature effect of reaction system and structure effect of the complexes on the rate of BNPP hydrolysis catalyzed by the complexes have been discussed.

The Study of the Hydrolysis of the Phosphate Diester Catalyzed by an Anion Metallomicelle of Ce3+-Diethylenetriamine

2012 ◽  
Vol 554-556 ◽  
pp. 353-356
Author(s):  
Shu Lan Cai ◽  
Fa Mei Feng ◽  
Tao Wang ◽  
Xiu Lan Zhang
Keyword(s):  
Critical Micelle Concentration ◽  
High Activity ◽  
Catalytic Efficiency ◽  
Active Species ◽  
Phosphate Ester ◽  
Catalytic Hydrolysis ◽  
Phosphate Diester ◽  
Nitrophenyl Phosphate ◽  
Hydrolysis Of ◽  
Lauroyl Sarcosinate

The catalytic hydrolysis of Bis(p-nitrophenyl) phosphate ester (BNPP) in the metallomicelle made up of Ce3+-diethylenetriamine and LSS (N-lauroyl sarcosinate) was investigated by UV/VIS method. The effect of the catalytic efficiency and stability of the system was studied under the different conditions. The results indicated that the catalytic system exhibited high activity, stability and reproducibility in the BNPP catalytic hydrolysis under proper proportion of Ce3+ion and diethylenetriamine, pH and temperature when the concentration of LSS is higher than its CMC (critical micelle concentration). The results also showed that the active species is the complex made up of Ce3+ion and diethylenetriamine.

Hydrolysis of phosphate diester catalysed by transition metal complexes of a salicylaldimine Schiff base bearing dibenzo-18-crown-6

2005 ◽  
Vol 2005 (2) ◽  
pp. 130-134 ◽  
Author(s):  
Jin Zhang ◽  
Jia-qing Xie ◽  
Ying Tang ◽  
Jun Li ◽  
Jian-zhang Li ◽  
...  
Keyword(s):  
Mathematical Model ◽  
Schiff Base ◽  
Crown Ether ◽  
Transition Metal Complexes ◽  
Catalytic Hydrolysis ◽  
Reaction Conditions ◽  
Reaction Systems ◽  
Phosphate Diester ◽  
Nitrophenyl Phosphate ◽  
Hydrolysis Of

A new crowned Schiff base ligand and its cobalt(II) and manganese(III) complexes were synthesised and characterised. These complexes were used to catalyse the hydrolysis of bis(4-nitrophenyl) phosphate (BNPP) in order to mimic the action of hydrolytic metalloenzymes. The kinetics and the mechanism of the titled reactions were investigated. The change of the characteristic ultraviolet spectra of the reaction systems was also analysed. A kinetic mathematical model of BNPP cleavage catalysed by the complexes is proposed. The function of the crown ether ring and the effects of the reaction conditions on the catalytic hydrolysis of BNPP are discussed.

Preparation of a new metallomicelle catalyst for the hydrolysis of bis(4-nitrophenyl) phosphate

2013 ◽  
Vol 67 (4) ◽  
Author(s):  
Jia-Qing Xie ◽  
Ci Li ◽  
Min Wang ◽  
Bing-Ying Jiang
Keyword(s):  
Reaction Rate ◽  
Active Species ◽  
Local Concentration ◽  
Catalytic Hydrolysis ◽  
Catalytic Function ◽  
Nitrophenyl Phosphate ◽  
Spontaneous Hydrolysis ◽  
Lauryl Ether ◽  
Hydrolysis Of ◽  
Bnpp Hydrolysis

AbstractA new metallomicellar system containing cerium(III), a macrocylic polyamine ligand, and the nonionic surfactant Brij35(polyoxyethylene(23) lauryl ether) was prepared and used as a catalyst in the hydrolysis of bis(4-nitrophenyl) phosphate (BNPP). Catalytic rate of the BNPP hydrolysis was measured kinetically using the UV-VIS spectrophotometric method. The results indicate that the metallomicellar system has relatively high stability and excellent catalytic function in the BNPP hydrolysis; also, the reaction rate of the BNPP catalytic hydrolysis increased by a factor of ca. 1 × 1010 compared to the BNPP spontaneous hydrolysis due to the catalytic effect of the active species and the local concentration effect of the micelles in the metallomicellar system. Experimental results also showed that the mono-hydroxy complex containing the macrocyclic polyamine ligand and cerium(III) is the real active species in the BNPP catalytic hydrolysis, and that the micelles provide a useful catalytic environment for the reaction. On basis of the research results, the reaction mechanism of BNPP catalytic hydrolysis has been proposed.

Intramolecular Nucleophilic Substitution in the Hydrolysis of Bis(4-Nitrophenyl) Phosphate Ester Catalyzed by the Metallomicelle

2012 ◽  
Vol 554-556 ◽  
pp. 345-348
Author(s):  
Min Wang ◽  
Li Qin Xu ◽  
Ci Li ◽  
Bing Ying Jiang ◽  
Jia Qing Xie
Keyword(s):  
Nucleophilic Substitution ◽  
Absorption Spectra ◽  
Catalytic Efficiency ◽  
Phosphate Ester ◽  
Catalytic Hydrolysis ◽  
Characteristic Absorption ◽  
Intramolecular Nucleophilic Substitution ◽  
Nitrophenyl Phosphate ◽  
Hydrolytic Reaction ◽  
Hydrolysis Of

A macro-cyclic Schiff base ligand and the corresponding Cu (II) and Ni (II) complexes were synthesized and characterized. And the catalytic efficiency of the metallomicelles made of these complexes and noninonic micelle Brij35, as mimetic hydrolytic metalloenzyme, was investigated in the catalytic hydrolysis of bis(p-nitrophenyl) phosphate (BNPP) in this paper. The results show that the rate of the BNPP hydrolysis in the metallomicelles is about 106 -fold faster than that of the BNPP spontaneous hydrolysis in aqueous solution at the same conditions. The analysis of the characteristic absorption spectra of the hydrolytic reaction systems indicates that the key intermediate, composing of BNPP and Ni(II) or Cu(II) complexes, has been formed and the catalytic hydrolysis of BNPP is an intramolecular nucleophilic substitution reaction. Based on the results of characteristic absorption spectra, the mechanism of BNPP catalytic hydrolysis has been proposed and also the corresponding kinetic mathematical model has been established.

Metallomicellar Catalytic Hydrolysis of Bis(4‐nitrophenyl) Phosphate by CuIINiIIHeterodinuclear Complexes in Brij35 Micellar Solution

2005 ◽  
Vol 26 (3) ◽  
pp. 321-327 ◽  
Author(s):  
Rongrong Zang ◽  
Zhong Huang ◽  
Xiangguang Meng ◽  
Xingming Kou ◽  
Juan Du ◽  
...  
Keyword(s):  
Micellar Solution ◽  
Catalytic Hydrolysis ◽  
Nitrophenyl Phosphate ◽  
Hydrolysis Of

Hydrolysis of BNPP Catalyzed by the Dodecyliminodiacetate Nickel (II) Complexes

2013 ◽  
Vol 746 ◽  
pp. 123-127
Author(s):  
Shen Xin Li ◽  
Wei Hu ◽  
Ying Wang ◽  
Song Wu
Keyword(s):  
Activation Energy ◽  
Kinetic Parameter ◽  
Absorption Spectra ◽  
Catalytic Hydrolysis ◽  
Specific Absorption ◽  
Reaction Systems ◽  
Nitrophenyl Phosphate ◽  
Hydrolytic Reaction ◽  
Hydrolysis Of

One novel dodecyliminodiacetate nickel (II) complex were synthesized and characterized, and these complexes were used as mimic hydrolytic in catalytic hydrolysis of bis (p-nitrophenyl) phosphate (BNPP). The analysis of specific absorption spectra of the hydrolytic reaction systems indicated that the catalytic hydrolysis involved the key intermediates formed by BNPP with nickel (II) complexes. The kinetic parameter of BNPP catalytic hydrolysis has been calculated and the activation energy for the catalytic hydrolysis is 95.26kJ·mol-1.

Catalytic Hydrolysis of Bis(p-Nitrophenyl) Phosphate by Lipophilic Diaquo(Tetraamine) Cobalt(III) in Micellar Solution

2001 ◽  
Vol 22 (4) ◽  
pp. 337-341 ◽  
Author(s):  
Xie Jiaqing ◽  
Cheng Siqing ◽  
Du Juan ◽  
Zeng Xiancheng
Keyword(s):  
Micellar Solution ◽  
Catalytic Hydrolysis ◽  
Nitrophenyl Phosphate ◽  
Hydrolysis Of
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