Rhenium Platinum Reforming

Activation of platinum containing reforming catalysts

A metal catalyst preferably comprised of a platinum/rhenium metal combination, supported on alumina is activated for the reforming of hydrocarbon feedstock, by being contacted with an oxygen-containing gas at a temperature sufficient to oxidize the metal catalyst and then being reduced sequentially by contacting the catalyst with a stream of hydrogen at about 650° to …

Catalytic reforming

The commonly used catalytic reforming catalysts contain noble metals such as platinum and/or rhenium, which are very susceptible to poisoning by sulfur and nitrogen compounds. Therefore, the naphtha feedstock to a catalytic reformer is always pre-processed in a hydrodesulfurization unit which removes both the sulfur and the nitrogen compounds.

CN106311290A

A platinum-rhenium reforming catalyst includes an aluminum oxide carrier containing a sulfate radical. On the basis of aluminum oxide in the carrier, the catalyst also includes the components of: 0.1-2.0 mass% of a VIII-group metal, 0.1-3.0 mass% of a VIIB-group metal, 0.5-3.0 mass% of halogens, and 0.45-3.0 mass% of the sulfate radical.

Rhenium and platinum recovery from platinum and rhenium …

A Pt-Re catalyst-based rhenium and platinum recovery solvolyticometallurgical technique has been developed by chlorinating with chlorine gas mixed with dimethylformamide and hydrochloric acid.

Fouling of a platinum-rhenium reforming catalyst using …

The function of Re in the stabilization of a commercial platinum reforming catalyst was investigated by determining and then comparing the fouling characteristics of two model …

Bimetallic platinum rhenium catalyst for efficient …

Herein, we report the development of a bimetallic Pt–Re/Al 2 O 3 catalyst for the dehydrogenation of H12-BT under moderate conditions to enable heat integration of the endothermal dehydrogenation reaction with low temperature waste heat …

Rhenium as a Catalyst, From Reforming to Green Solutions

Rhenium's excellent material properties have enabled rhenium-activated catalysts to play a major role in this transition, from fossil fuel reforming to biorefinery, hydrogen evolution in ...

Recovery of Platinum and Rejuvenation of Alumina …

Recovery of platinum from spent naphtha reforming catalyst (Pt/γ-Al2O3) which contain 0.30 wt % of Pt was conducted using two methods, the first one was treatment of the spent catalyst with aqua regia whereas the second one involved chlorination of the spent catalyst.

Fouling of a platinum-rhenium reforming catalyst using model reforming

The function of Re in the stabilization of a commercial platinum reforming catalyst was investigated by determining and then comparing the fouling characteristics of two model reforming reactions catalyzed by bifunctional Pt and Pt-Re catalysts.

Development and Application of the Current Situation and …

This is an essay in the field of ceramics and composites.With the increasing demand for crude oil processing technology, China′s platinum rhenium catalyst industry is also developing. Catalyst is the core material of petroleum smelting, and impregnation method is the most important preparation method of reforming catalyst. Catalytic reforming catalysts …

Bimetallic platinum rhenium catalyst for efficient low …

Bimetallic platinum rhenium catalyst for efficient low temperature dehydrogenation of perhydro benzyltoluene ... For example, a team of the Chevron Research Company patented in 1968 a Pt–Re/Al 2 O 3 system for the catalytic reforming process of sulphur-free naphtha. 12 With the establishment of bimetallic Pt–Re systems in catalytic ...

Catalysis in the Petroleum Naphtha Catalytic Reforming Process

Before the US. Patent (1949) by Haensel wherein platinum was used as the active metal component in the industrial catalytic reforming catalysts, molybdenum and /or chromium oxides were used but ...

Recovery and extraction of platinum from spent catalysts: A …

The Gemini process (a liquid-solid resin ion exchange system) is used to recover platinum from a spent platinum-rhenium catalyst based on the alumina of the reforming unit.

On the path of recovering platinum-group metals and …

Recent technologies of platinum group metals (PGM) and rhenium recoveries were reviewed. Industrial application capabilities were assessed. Operational aspects and interfaces …

The Oxidation State of Rhenium and Its Role in Platinum …

A Review of the Behaviour of Platinum Group Elements within Natural Magmatic Sulfide Ore Systems

Bimetallic platinum rhenium catalyst for efficient low …

Fouling of a platinum-rhenium reforming catalyst using model reforming

It is well known that rhenium stabilizes a commercial platinum reforming catalyst; however, the exact role of Re is still in doubt. The function of Re was investigated by determining and then comparing the fouling characteristics of two model reforming reactions catalyzed by bifunctional Pt and Pt Re catalysts.

Improved performance from reforming

Rhenium is not used, since CCR reforming catalysts do not need to be as stable as fixed-bed reforming catalysts. However, CCR reforming catalysts do use other metals, most notably tin, to enhance catalyst selectivity. While most CCR reforming catalysts are bimetallic (containing platinum and tin), other proprietary promoter metals are also used ...

Role of rhenium in Pt‐Re‐Al2O3 reforming …

The inclusion of Re in Pt-Re-Al 2 O 3 reforming catalysts to improve the lifetime is known, but how rhenium functions and how it is disposed in the catalyst …

Fouling of a platinum-rhenium reforming catalyst using …

It is well known that rhenium stabilizes a commercial platinum reforming catalyst; however, the exact role of Re is still in doubt. The function of Re was investigated by …

Role of rhenium in Pt‐Re‐Al2O3 reforming catalysis—An …

The inclusion of Re in Pt-Re-Al 2 O 3 reforming catalysts to improve the lifetime is known, but how rhenium functions and how it is disposed in the catalyst remain unclear.

Characteristics and catalytic activity of platinum reforming …

Recovery of Platinum and Rejuvenation of Alumina From …

Recovery of platinum from spent naphtha reforming catalyst (Pt/γ-Al2O3) which contain 0.30 wt % of Pt was conducted using two methods, the first one was treatment of the spent catalyst with …

Role of rhenium in Pt-Re-Al2O3 reforming catalysis—An …

In spite of the applications of advanced instrumental techniques in catalysis, there have been great difficulties inherent in studying the structure and composition of surface atoms in dispersed high area systems such as Pt-Re-AlzO3, the industrial reforming catalyst. Platinum-rhenium-alumina catalysts contain an amount of rhenium comparable to ...

Characteristics and catalytic activity of platinum reforming …

The effect of treating aluminum oxide with organic acids (acetic acid, oxalic acid) on the dispersity, composition, and catalytic properties of the platinum sites of reforming …

Rhenium and platinum recovery from platinum and rhenium …

A Pt-Re catalyst-based rhenium and platinum recovery solvolyticometallurgical technique has been developed by chlorinating with chlorine gas mixed with dimethylformamide …

Reforming with a platinum-rhenium catalyst

a reforming process utilizing as a catlyst a composition of matter comprising a porous solid carrier in association with 0.1 to 3.0 weight percent platinum, and 0.1 to 3.0 weight percent rhenium with a rhenium to platinum atomic ratio of less than 1.0. the platinum and rhenium are disposed on the surface of the carrier by impregnation with water soluble compounds of the metals, followed by ...

On the path of recovering platinum-group metals and rhenium…

Recent technologies of platinum group metals (PGM) and rhenium recoveries were reviewed. Industrial application capabilities were assessed. Operational aspects and interfaces between unit operations were outlined. Current development strategies …

The Oxidation State of Rhenium and Its Role in Platinum-Rhenium …

A Review of the Behaviour of Platinum Group Elements within Natural Magmatic Sulfide Ore Systems

Characteristics and catalytic activity of platinum reforming …

The effect of treating aluminum oxide with organic acids (acetic acid, oxalic acid) on the dispersity, composition, and catalytic properties of the platinum sites of reforming catalysts is investigated. It is established that due to the high number of support defects, a Pt/О х -Al2O3 sample prepared on the basis of aluminum oxide treated with oxalic acid solution has the the …