A process for making an oxymethylene polymer comprising polymerizing at least one compound capable of forming CH.sub.2O repeat units (monomer) in the presence of at least one ester of the general formula I (ester): R.sup.1COOR.sup.2 (I) wherein R.sup.1 can be hydrogen, wherein R.sup.1 and R.sup.2 are independently of each other linear or branched C.sub.1 to C.sub.10 alkyl C.sub.5 to C.sub.7 cycloalkyl [R.sup.3-0-].sub.nR.sup.4 wherein R.sup.3 is a linear or branched C.sub.2 to C.sub.5 alkylen and R.sup.4 is a linear of branched C.sub.1 to C.sub.5 alkyl and n is an integer of from 1 to 5. and in the presence of at least one Lewis acid.

The present invention relates to a method for purifying a compound represented by the formula (I), the method including treating a mixture containing the compound represented by the formula (I) and a compound represented by the formula (II) with an aqueous solution of a basic compound.

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where, in the formula (I), R.sup.1 represents a hydrogen atom or a chlorine atom; in the formula (II), R.sup.2, R.sup.3 and R.sup.4 are the same or different from each other and represent a hydrogen, a chlorine atom or a fluorine atom independently, at least one of R.sup.3 and R.sup.4 represent a chlorine atom or a fluorine atom, and, in the case where R.sup.3 represents a chlorine atom, R.sup.4 represents a chlorine atom or a fluorine atom.

Methods for producing supported catalysts containing a transition metal and a bound zeolite base are disclosed. These methods employ a step of impregnating the bound zeolite base with the transition metal, fluorine, and high loadings of chlorine. The resultant high chlorine content supported catalysts have improved catalyst activity in aromatization reactions.

Methods for producing supported catalysts containing a transition metal and a bound zeolite base are disclosed. These methods employ a step of impregnating the bound zeolite base with the transition metal, fluorine, and high loadings of chlorine. The resultant high chlorine content supported catalysts have improved catalyst activity in aromatization reactions.

A process for the manufacture of a catalyst comprising a fluorinated metal oxide is provided. A catalyst comprising a fluorinated metal oxide is provided. A catalytic hydrogenation process is also provided.

A method of forming a self-cleaning film system includes depositing a fluorinated material selected from the group consisting of fluorinated organic compounds, fluorinated inorganic compounds, and combinations thereof onto a substrate to form a first layer. The method includes removing a plurality of portions of the first layer to define a plurality of cavities in the first layer and form a plurality of projections that protrude from the substrate. The method includes depositing a photocatalytic material onto the plurality of projections and into the plurality of cavities to form a second layer comprising: a plurality of bonded portions disposed in the plurality of cavities and in contact with the substrate, and a non-bonded portion disposed on the plurality of projections and spaced apart from the substrate. The method also includes, after depositing the photocatalytic material, removing the non-bonded portion to thereby form the self-cleaning film system.

A method of preparing a bound zeolite support comprising: contacting a zeolite powder with a binder and water to form a paste; shaping the paste to form an wet extruded base; removing excess water from the wet extruded base to form an extruded base; contacting the extruded base with a fluorine-containing compound to form a fluorinated extruded base; calcining the extruded base to form a calcined fluorinated extruded base; washing the calcined fluorinated extruded base to form a washed calcined fluorinated extruded base; drying the washed calcined fluorinated extruded base to form a dried washed calcined fluorinated extruded base; and calcining the dried washed calcined fluorinated extruded base to form a bound zeolite support.

A manufacturing method of 1-chloro-3,3,3-trifluoropropene (1233zd) is provided. This manufacturing method includes a reaction in which a halogenated hydrocarbon compound having a carbon number of 3 and represented by a general formula (1) is heated:

CF.sub.aCl.sub.3-aCH.sub.2CHF.sub.bCl.sub.2-b(1)

In the formula, a is an integer from 0 to 2, b is 1 or 2 when a=0, b is 0 or 1 when a=1, and b is 0 when a=2.

A manufacturing method of 1-chloro-3,3,3-trifluoropropene (1233zd) is provided. This manufacturing method includes a reaction in which a halogenated hydrocarbon compound having a carbon number of 3 and represented by a general formula (1) is heated:

CF.sub.aCl.sub.3-aCH.sub.2CHF.sub.bCl.sub.2-b(1)

In the formula, a is an integer from 0 to 2, b is 1 or 2 when a=0, b is 0 or 1 when a=1, and b is 0 when a=2.

The current disclosure relates to an apparatus and a process for producing poly--olefins (PAO), including reacting olefin monomers in a presence of a catalyst complex to form PAO product. The reaction is performed in a reaction including a reactor vessel and a system for recycling and cooling part of reactor outlet stream. At least one reactor is a cone reactor with a first cross sectional area in an upper part of the vessel and the cross sectional area decreases downwards to a second cross sectional area, which is smaller than the first cross sectional area.