scholarly journals (164)On the Catalytic Hydrolysis of Chlorobenzene to Phenol in Vapor Phase. The Effect of Reaction-Temperature, Space Velocity, The Ratio of Water to Chlorobenzene, and Use of Ammonia Water in Place of Water.

1951 ◽  
Vol 54 (5) ◽  
pp. 328-330 ◽  
Author(s):  
Nobuto Ohta ◽  
Takashi Tezuka
Keyword(s):  
Vapor Phase ◽  
Reaction Temperature ◽  
Space Velocity ◽  
Catalytic Hydrolysis ◽  
Ammonia Water ◽  
Hydrolysis Of

Effects of Temperature on Catalytic Hydrolysis of PET by Zinc Sulfate under Microwave Irradiation

2011 ◽  
Vol 233-235 ◽  
pp. 1628-1631 ◽  
Author(s):  
Qing Hua Tang ◽  
Yong Shuai Ma ◽  
Dong Zhang
Keyword(s):  
Microwave Irradiation ◽  
Polyethylene Terephthalate ◽  
Reaction Temperature ◽  
Terephthalic Acid ◽  
Zinc Sulfate ◽  
Influencing Factor ◽  
Catalytic Hydrolysis ◽  
Different Temperatures ◽  
Effects Of Temperature ◽  
Hydrolysis Of

The effects of different temperatures on catalytic hydrolysis of polyethylene terephthalate(PET) by zinc sulfate as a catalyst under microwave irradiation were studied, and in the meantime, the relation between the depolymerization rate of PET and the yield of terephthalic acid(TPA) under the same temperature was investigated. The results suggested that the reaction temperature was an important influencing factor for the depolymerization reaction of PET, and the concentration of depolymerization product TPA and the depolymerization rate of PET became coherence under the same temperature.

Catalytic Hydrolysis of Chlorobenzene in the Vapor Phase.

1940 ◽  
Vol 44 (6) ◽  
pp. 727-730 ◽  
Author(s):  
Arthur A. Vernon ◽  
Francis X. Thompson
Keyword(s):  
Vapor Phase ◽  
Catalytic Hydrolysis ◽  
Hydrolysis Of

Removal of Vapor-Phase Elemental Mercury over a CuO/AC Catalyst

2012 ◽  
Vol 610-613 ◽  
pp. 64-67
Author(s):  
Jun Wei Wang ◽  
Xue Jun Kong ◽  
Rong Bin Du ◽  
Yanjie Dong
Keyword(s):  
Removal Efficiency ◽  
Vapor Phase ◽  
Reaction Temperature ◽  
Elemental Mercury ◽  
Space Velocity ◽  
Oxidation Activity ◽  
Temperature Range ◽  
Activated Coke

Removal of vapor-phase elemental mercury (Hg0) over an activated coke (AC) and activated coke supported CuO catalyst (CuO/AC) were studied under N2+HCl atmosphere. This paper describes the influences of CuO loading, reaction temperature, Hg0 concentration and space velocity on Hg0 removal over CuO/AC. It was found that CuO/AC had a higher Hg0 removal capability than that of AC, which can be attributed to the oxidation activity of CuO. The capability of CuO/AC for Hg0 removal increased with an increase of CuO loading (1-20 wt.%). The Hg0 removal capability was the highest at around 180 °C in the temperature range of 120-200 °C, which can be due to the co-effect of adsorption and oxidation. As Hg0 concentration and space velocity decreased, the Hg0 removal efficiency increased.

Effects of Reaction Conditions on Low-Temperature Removal of Carbon Disulfide over Modified Coconut Shell Activated Carbons Catalysts

2014 ◽  
Vol 894 ◽  
pp. 293-299
Author(s):  
Li Hong Tang ◽  
Hui Bin Guo ◽  
Kai Li ◽  
Ping Ning ◽  
Chi Wang ◽  
...  
Keyword(s):  
Carbon Disulfide ◽  
Reaction Temperature ◽  
Activated Carbons ◽  
Sol Gel ◽  
Space Velocity ◽  
Catalytic Performance ◽  
Coconut Shell ◽  
Catalytic Hydrolysis ◽  
Inlet Concentration ◽  
Reaction Conditions

In this work, a series of modified coconut shell activated carbons (CSAC) catalysts were prepared by sol-gel method and used for catalytic hydrolysis of carbon disulfide (CS2) at low-temperatures. The influences of reaction conditions such as: reaction temperature, O2 concentration, relative humidity (RH), gas hourly space velocity (GHSV) and inlet concentration of CS2 on catalytic hydrolysis activities were studied. When the reaction temperature was 60°C, this catalyst showed the best catalytic performance and no better effect occurs with the increase of temperature. CS2 hydrolysis activities were decreased with increasing amounts of O2. When the RH was 30%, the catalyst manifests the best activity. The catalytic hydrolysis activities were decreased with increased of GHSV from 5000~20000h-1. In addition, when the inlet concentration of CS2 increased from 10ppm to 100ppm, the catalytic hydrolysis activities could be decreased.

Study on the Synthesis of Ethylene Glycol by Catalytic Hydrolyze of Ethylene Carbonate

2014 ◽  
Vol 989-994 ◽  
pp. 79-82
Author(s):  
Min Zhang
Keyword(s):  
Reaction Time ◽  
Ethylene Glycol ◽  
Influencing Factors ◽  
Reaction Temperature ◽  
Mass Fraction ◽  
Ethylene Carbonate ◽  
Catalytic Hydrolysis ◽  
Optimal Conditions ◽  
Reaction Products ◽  
Hydrolysis Of

The process for ethylene glycol (EG) by catalytic hydrolysis of ethylene carbonate (EC) was studied. The influencing factors of the reaction products were studied which include the reaction temperature, the mole ratio of H2O to EC, the mass fraction of the catalyst and the reaction time. The optimal conditions were identified as follows: the reaction temperature is 140-145°C, n (H2O) :n (EC) = 2.0-2.5 : 1, the catalyst of Al2O3is about 2.0wt%, the reaction time is about two hours. Under the above conditions, EC can be completely hydrolyzed and the selectivity of EG is above 98%.

Hydrogen Generation by Hydrolysis of the Ball Milled Al-C-KCl Composite Powder in Distilled Water

2012 ◽  
Vol 519 ◽  
pp. 87-91 ◽  
Author(s):  
Xia Ni Huang ◽  
Zhang Han Wu ◽  
Ke Cao ◽  
Wen Zeng ◽  
Chun Ju Lv ◽  
...  
Keyword(s):  
Particle Size ◽  
Reaction Temperature ◽  
Fine Particle ◽  
Composite Powder ◽  
Hydrogen Generation ◽  
Aluminum Particle ◽  
Generation Rate ◽  
Composite Powders ◽  
Fine Particle Size ◽  
Hydrolysis Of

In the present investigation, the Al-C-KCl composite powders were prepared by a ball milling processing in an attempt to improve the hydrogen evolution capacity of aluminum in water. The results showed that the hydrogen generation reaction is affected by KCl amount, preparation processing, initial aluminum particle size and reaction temperature. Increasing KCl amount led to an increased hydrogen generation volume. The use of aluminum powder with a fine particle size could promote the aluminum hydrolysis reaction and get an increased hydrogen generation rate. The reaction temperature played an important role in hydrogen generation rate and the maximum hydrogen generation rate of 44.8 cm3 min-1g-1of Al was obtained at 75oC. The XRD results identified that the hydrolysis byproducts are bayerite (Al(OH)3) and boehmite (AlOOH).

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