rate law for cumene hydroperoxide to phenol

Cumene Hydroperoxide Market Size 2021 Industry Demand ...

Sep 01, 2021 (The Expresswire) -- "Final Report will add the analysis of the impact of COVID-19 on this industry" "Cumene Hydroperoxide Market" Report 2021...

CUMENE HYDROPEROXIDE | CAMEO Chemicals | NOAA

CUMENE HYDROPEROXIDE is a strong oxidizing agent. May react explosively upon contact with reducing reagents. Violent reaction occurs upon contact with copper, copper alloys, lead alloys, and mineral acids. Contact with charcoal powder gives a strong exothermic reaction. Decomposes explosively with sodium iodide [Chem. Eng. News, 1990, 68 (6), 2].

Explosion evaluation and safety storage analyses of cumene ...

Plenty of thermal explosions and runaway reactions of cumene hydroperoxide (CHP) were described from 1981 to 2010 in Taiwan. Therefore, a thermal explosion accident of CHP in oxidation tower in 2010 in Taiwan was investigated because of piping breakage. In general, high concentration of CHP for thermal analysis using the calorimeter is dangerous. Therefore, a simulation method and a …

Effects of cumene hydroperoxide on phenol and acetone ...

Abstract Cumene hydroperoxide (CHP) being catalyzed by acid is one of the crucial processes for producing phenol and acetone globally. However, it is thermally unstable to the runaway reaction readily. In this study, various concentrations of phenol and acetone were added into CHP for determination of thermal hazards. Differential scanning calorimetry (DSC) tests were used to obtain …

WO2001066500A1 - Method of producing cumene hydroperoxide ...

A cumene process of producing phenol and acetone comprises the joint oxidation of aldehydes and dimethylbenzene alcohol by aqueous hydrogen peroxide solutions in presence of 16 wt.% to 94 wt.% of cumene hydroperoxide by contacting of mutually insoluble phases of the organic products from a cumene oxidation stage and hydrogen peroxide containing water with optional addition of acidic …

New Catalysts for the Conversion of Cumene Hydroperoxide ...

The conversion of cumene hydroperoxide into phenol under acidic conditions, is an important industrial process. In the recent patent literature, new acid based procedures are still reported.2, 3 The conversion of cumene hydroperoxide into acetophenone and cumyl alcohol under the influence of simple copper or iron salts is also a well known phenomenon.4, 5 There are not many …

US Patent for Method for the production of phenol and ...

A method for the production of phenol and acetone from a cumene hydroperoxide mixture comprises a first stage and a second stage and at least two serially connected reactors, wherein the first stage comprises decomposition of a cumene hydroperoxide mixture in the presence of a catalyst mixture to form a dicumyl peroxide mixture, and the second stage comprises formation of a phenol …

Cumene Hydroperoxide - an overview | ScienceDirect Topics

3 Case study. The first step in phenol production is oxidation of cumene to cumene-hydroperoxide (CHP) with 25-30% conversion. Phenol comes from cleavage of CHP, but in the previous step the diluted CHP has to be concentrated. The concentration of CHP (to ~ 60w%) is done in vacuum distillation column, where the bottom product is the ...

Reaction hazard analysis for the thermal decomposition of ...

Organic peroxides have caused many serious explosions and fires that were promoted by thermal instability, chemical pollutants, and even mechanical shock. Cumene hydroperoxide (CHP) has been employed in polymerization and for producing phenol and dicumyl peroxide (DCPO). Differential scanning calorimetry (DSC) has been used to assess the thermal hazards associated with CHP …

Decomposition of cumene hydroperoxide using a Lewis acid ...

The temperature rose to a maximum of 89° C. After 10 minutes the product mixture was analyzed. It was determined that the cumene hydroperoxide had reacted at a selectivity of 94 percent to phenol, 3 percent to alphamethylstyrene and 3 percent to acetophenone. EXAMPLE 5. After the cumene hydroperoxide reached 60° C., 0.002 g.

Kinetics of acid-catalyzed cleavage of cumene hydroperoxide

Exploring the effect of phenol and acetone on reactivity further, a test was performed in which much of the cumene was replaced with phenol, yielding a mixture containing 50 wt% phenol. In this case, the rate of the low temperature exotherm, particularly below 30 °C, was dramatically reduced ( …

Method for the production of phenol and acetone - SABIC ...

The invention claimed is: 1. A method for the production of phenol and acetone from a cumene hydroperoxide mixture comprising: decomposing the cumene hydroperoxide mixture in the presence of a catalyst mixture to form a mixture comprising phenol and acetone, wherein the method further comprises: a) forming the catalyst mixture in a catalyst formation reactor by combining sulfuric acid …

Phenol Production Process Design - Tiffany Robinson

to produce phenol as a raw material at a cheaper cost than the current market price of $0.64/lb. The production rate of concern is 190,000 metric tons per year. Basic Flow Diagram and Process Background The phenol production process is based on the oxidation and cleavage of cumene. Major Hazards Oxidation of Cumene (Hock process)[1]:

Explain the preparation of phenol from cumene.

Preparation of phenol from cumene →. To prepare phenol, cumene is first oxidised in the presence of air to cumene hydroperoxide. (Isoprophyl benzene)Cumene. . O 2. . Cumene hydroperoxide. Now, cumene hydroperoxide is treated with dilute acid to prepare phenol and acetone as by-products. Cumene hydroperoxide H +323−363K.

US7141700B1 - Decomposition of cumene hydroperoxide ...

A process for the decomposition of a cumene oxidation product mixture to produce phenol and acetone with reduced by-product formation by introducing the cumene oxidation mixture into an inlet of a decomposing vessel containing indirect heat exchange surfaces wherein the cumene oxidation product mixture and a circulating stream are admixed, reacted and cooled by passage around the indirect heat ...

Production of Phenol | Chemical Reactor | Reaction Rate

From this value, it shows that the reactor 2 required 73722.26 kg / h feed mixture of Cumene hydroperoxide, Cumene and Oxygen to produce 15566.63 kg / h of Phenol at the conversion of 90% of Cumene Peroxide at reactor 2. Molecule Balance on reactor 1: 1.

Phenol - Wikipedia

Phenol (also called carbolic acid) is an aromatic organic compound with the molecular formula C 6 H 5 OH. It is a white crystalline solid that is volatile.The molecule consists of a phenyl group (−C 6 H 5) bonded to a hydroxy group (−OH). Mildly acidic, it requires careful handling because it can cause chemical burns.. Phenol was first extracted from coal tar, but today is produced on a ...

US Patent for Process for preparing phenol and acetone by ...

The process as claimed in claim 9, wherein the residual concentration of cumene hydroperoxide in the cumene hydroperoxide cleavage product ranges from 0.1-0.3% by weight. 11. The process as claimed in claim 1, wherein cumene hydroperoxide is cleaved at a temperature ranging from 45-75° C. and a pressure of 1-5 bar absolute.

Thermal hazards evaluation of cumene hydroperoxide mixed ...

Over 90% of the cumene hydroperoxide (CHP) produced in the world is applied in the production of phenol and acetone. The additional applications were used as a catalyst, a curing agent, and as an initiator for polymerization. Many previous studies from open literature have verified and employed various aspects of the thermal decomposition and thermokinetics of CHP reactions. An …

CN1041581A - Phenol preparation and the method that ...

Preparing phenol with egr mode carries out through the following steps: (a) make the reaction of benzene and propylene with synthesizing iso-propylbenzene, (b) isopropyl benzene with step (a) is oxidized to cumene hydroperoxide, (c) be phenol and acetone with the Cumene Hydroperoxide 80 acid cleavage, (d) acetone with step (c) is hydrogenated to Virahol, (e) isopropanol dehydration of …

Effects of stirring rate for thermal runaway reaction in ...

Cumene hydroperoxide (CHP) being catalyzed by acid is one of the crucial processes for producing phenol and acetone globally. However, it is thermally unstable to the runaway reaction readily.

Cumene hydroperoxide cleavage process - Shell Oil Company

A process for the decomposition of cumene hydroperoxide to phenol, acetone, and alpha-methylstyrene is presented. In this process, cumene hydroperoxide and sulfuric acid are reacted in a reflux cooled reactor the products of which are transported under inhibited conditions to a plug flow reactor, and are reacted to produce phenol, acetone, and alpha-methylstyrene.

Production of phenol from cumene - ScienceDirect

Liquid-phase oxidation of cumene with molecular oxygen produces cumene hydroperoxide, which is subsequently decomposed catalytically into phenol and acetone. The oxidation requires the use of thoroughly purified cumene. )t was carried out in a copper vessel at 120 C, good conversions and high yields of cumene hydroperoxide being obtained.

Cumene - Wikipedia

Cumene (isopropylbenzene) is an organic compound that is based on an aromatic hydrocarbon with an aliphatic substitution. It is a constituent of crude oil and refined fuels. It is a flammable colorless liquid that has a boiling point of 152 °C. Nearly all the cumene that is produced as a pure compound on an industrial scale is converted to cumene hydroperoxide, which is an intermediate in the ...

(PDF) Catalytic decomposition of cumene hydroperoxide into ...

However one of the key manufacturing process is air oxidation of cumene to cumene hydroperoxide (CHP) followed by acid catalyzed cleavage of this CHP to phenol and aceton (Zakoshansky, 2009 ...

Effects of cumene hydroperoxide on phenol and acetone ...

The first report of phenol and acetone being produced by acid-catalyzed decomposition of cumene hydroperoxide (CHP) was in 1944 [ 4 ]. Hock and Lang use boiling 10% aqueous sulfuric acid to affect the conversion to phenol and acetone. At present, about 94.5% of phenol in the chemical market is manufactured by CHP decomposition [ 5 ].

Process for decomposition of cumene hydroperoxide - GEN ...

The cleavage reaction in the manufacture of phenol and acetone from cumene is well known. In the manufacturing scheme, a feed stream of cumene is oxidized to cumene hydroperoxide. It is then passed into a cleavage unit wherein an acid catalyst is added and the CHP is then decomposed to phenol, acetone and other by-products.

Cumene oxidation to cumene hydroperoxide Costa, C ...

The second step, propagation, is the rate controlling reaction for cumene oxidation, as it involves both the formation of CHP and the cumyl radical [8]. Figure 6 – Cumene hydroperoxide radical formation. Figure 7 – CHP production. Termination reactions cause disappearance of the radicals and thus stop the chain reaction [8].