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acid activated bentonite patent

Preparation of acid activated clay Google Patents

US2470872A US709778A US70977846A US2470872A US 2470872 A US2470872 A US 2470872A US 709778 A US709778 A US 709778A US 70977846 A US70977846 A US 70977846A US 2470872 A US2470872 A US 2470872A Authority US United States Prior art keywords clay acid pellets material density Prior art date 1946-11-14 Legal status (The legal

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Cited by: 3

Process For Manufacture Of Acid Activated Bentonite

Patent us5358915 process for regenerating spent acid-activated.Oct 25, 1994.Oxidizing said clay with an aqueous oxidant solution, after said oil removal.Acid-activated bentonite clays in the form of finely ground powders, commonly.Oil refining processes is

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US5008226A Process for making acid activated bleaching

A process for making acid-activated bleaching earth from certain naturally occurring mixtures of calcium bentonite and attapulgite clay. The process involves treating such clay with low levels of activating acid which are mixed with the dried and ground clay, or spray dried from slurries containing the clay-acid mixture. Advantages include: lower acid costs/unit mass of clay

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Cited by: 91

Cottonseed oil bleaching by acid-activated montmorillonite

At the same time the total surface area and the clay acidity increase. X-ray and FTIR data confirmed that acid activation affects both the octahedral and the tetrahedral sheets. The efficiency of acid-activated montmorillonite for the bleaching of cottonseed oil was investigated.

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Method of activating bentonite clays patents.google

US3240616A US219733A US21973362A US3240616A US 3240616 A US3240616 A US 3240616A US 219733 A US219733 A US 219733A US 21973362 A US21973362 A US 21973362A US 3240616 A US3240616 A US 3240616A Authority US United States Prior art keywords clay solution material bentonite method Prior art date 1962-08-27 Legal status (The

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Cited by: 13

Activation of Jordanian Bentonite by Hydrochloric Acid and

3.1.4. Determination of BET Surface Area. The surface area of bentonite shows a significant increase with activation by acid. Measured values are 66.2 and 287.8 m 2 g −1 for raw and activated bentonite, respectively. Since this increase is a result of removing impurities, replacement of exchangeable cations, such as K +, Na +, and Ca 2+, with H + ions, and

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US Patent for Clay treatment process for white mineral oil

A preferred acid-activated clay is acid-activated calcium bentonite. A most preferred acid-activated calcium bentonite is TONSIL CO 630G. In a further embodiment, the white oil feedstock is derived from a step of filtering a mineral oil feedstock through a regenerable sorbent.

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US5997732A Clay treatment process for Google Patents

US5997732A US09/172,744 US17274498A US5997732A US 5997732 A US5997732 A US 5997732A US 17274498 A US17274498 A US 17274498A US 5997732 A US5997732 A US 5997732A Authority US United States Prior art keywords white oil sub acid lt process according Prior art date 1997-12-22 Legal status (The legal status is an assumption and is not a legal

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Chapter 7.1 Acid Activation of Clay Minerals ScienceDirect

Jan 01, 2006Bentonite has always had a multitude of markets and acid-activated bentonite was a traditional product for many decades. It is usually a Ca 2+ -bentonite that was treated with inorganic acids to replace divalent calcium ions with monovalent hydrogen ions and to leach out ferric, ferrous, aluminium and magnesium ions thus altering the layers of

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COMPOSITION, STRUCTURE AND TEXTURAL

bentonite in place Gerzovo, before and after the activation with sulfuric acid. These charac-teristics were investigated by analytical methods, X-ray diffraction (XRD) and the method of low-temperature nitrogen adsorption (BET). Characteristics of acid-activated bentonite were compared with the characteristics of commercial active clay.

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Cottonseed oil bleaching by acid-activated montmorillonite

At the same time the total surface area and the clay acidity increase. X-ray and FTIR data confirmed that acid activation affects both the octahedral and the tetrahedral sheets. The efficiency of acid-activated montmorillonite for the bleaching of cottonseed oil was investigated.

get price

Process For Manufacture Of Acid Activated Bentonite

Patent us5358915 process for regenerating spent acid-activated.Oct 25, 1994.Oxidizing said clay with an aqueous oxidant solution, after said oil removal.Acid-activated bentonite clays in the form of finely ground powders, commonly.Oil refining processes is

get price

Acid Activation an overview ScienceDirect Topics

Acid-activated bentonites are high-added-value specialty clays and so are organophilic bentonites, which are prepared by replacement of the exchangeable cations by suitable organic cations. Organophilic bentonites are hydrophobic and are used for the preparation of CPN, with enhanced properties ( Bergaya and Lagaly, 2007, Bergaya et al., 2011 ).

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Hydroamination Reaction Catalyzed by Acid Activated

Keywords:Bentonite, hydroamination, p-toluenesulfonamide, cyclohexene, aniline. Abstract:Hydrochloric acid activated bentonite was used as a catalyst for hydroamination of cyclohexene with p-toluenesulfonamide under atmospheric pressure. The structure and surface acid property of the catalyst were studied by XRD and NH3-TPD.

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Bentonite Patents and Patent Applications (Class 106/DIG4

Bentonite Patents (Class 106/DIG4) Alkaline earth bentonite can be activated by the use of sodium citrate or other organic sequestering agent as activator. Dry blends of the activator and the bentonite can be provided. nickel, zinc, etc., the waste is mixed with a treating agent containing, as the essential constituent component, solid

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COMPOSITION, STRUCTURE AND TEXTURAL

bentonite in place Gerzovo, before and after the activation with sulfuric acid. These charac-teristics were investigated by analytical methods, X-ray diffraction (XRD) and the method of low-temperature nitrogen adsorption (BET). Characteristics of acid-activated bentonite were compared with the characteristics of commercial active clay.

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(PDF) Structural Property Improvements of Bentonite with

Structural properties of acid activated Hanc ı l ı bentonites w ere close to those stated in the patents (T ay lor and Hills 1991; T aylor and Jenkins 1998; T

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Actal Acid Clay Catalyst, Acid Activated Clay Manufacturers

Naturally occuring Bentonite is activated with acids. During acid activation the interlayer cations are exchanged per protons and other catalytically active cations. Metal ions like AlFe are leached out from octahedral layer of clay. As a result, clay becomes acidic and porous. This acid activation method is proprietary and is developed to

get price

Bentonite Wikipedia

Bentonite (/ ˈ b ɛ n t ə n ʌ ɪ t /) is an absorbent aluminium phyllosilicate clay consisting mostly of montmorillonite.One of the first findings of bentonite was in the Cretaceous Benton Shale near Rock River, Wyoming.The Fort Benton Group, along with others in stratigraphic succession, was named after Fort Benton, Montana in the mid-19th century by Fielding Bradford Meek and F.

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Bleaching clays, mineral adsorbents and catalytic

Our activated Bentonite adsorbents are a broad portfolio of products, including the industry-standard, F-Series of activated clays, which utilize trusted and proven activation technology for highly-effective purification of benzene, toluene, and xylene. The well-known F-Series acid-activated adsorbents offer the longest life span for

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Livestock Agricultural Marketing Service

18 Acid-activated bentonite is a synthetic substance petitioned for addition to 7 CFR 205.603 as a poultry litter 19 treatment. The primary intended use of the petitioned substance is to reduce the level of ammonia generated by 20 certain urease-producing bacteria commonly found in poultry litter. Acid-activated bentonite sequesters the

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Characterization, Acid Activation, and Bleaching

Acid activation caused an increase in moisture content to occur from 14.2% in raw clay to 17.4% in 3 M HCl activated clay, representing an increase of 3.2%. The moisture content for the clay lies within 10–18% recommended by Wiedermann [ 5 ] as being appropriate to ensure that the clay structure does not buckle and loses its adsorptive capacity.

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Bentonite, acid-leached Registration Dossier ECHA

Bentonite, acid-leached EC Number: 274-324-8 EC Name: Bentonite, acid-leached CAS Number: 70131-50-9 Molecular formula: unspecified for this UVCB substance IUPAC Name: silanedione alumane calcium hydrate silane sodium

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Optimization of Acid Activation Conditions for Athi River

Figure 2. Effect of acid concentration and bleaching time on palm oil bleaching performance with 1% activated Athi River bentonite clay. 3.3 Effect of clay-acid ratio The effect of clay-acid ratio was studied at 100°C, with 5M H 2 SO 4, for 3hours. The results are shown in Fig. 3. 0 2 4 6 8 10 12 14 D 0 2 4 6 Molar concentration of sulphuric

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Actal Acid Clay Catalyst, Acid Activated Clay Manufacturers

Naturally occuring Bentonite is activated with acids. During acid activation the interlayer cations are exchanged per protons and other catalytically active cations. Metal ions like AlFe are leached out from octahedral layer of clay. As a result, clay becomes acidic and porous. This acid activation method is proprietary and is developed to

get price

Hydroamination Reaction Catalyzed by Acid Activated

Keywords:Bentonite, hydroamination, p-toluenesulfonamide, cyclohexene, aniline. Abstract:Hydrochloric acid activated bentonite was used as a catalyst for hydroamination of cyclohexene with p-toluenesulfonamide under atmospheric pressure. The structure and surface acid property of the catalyst were studied by XRD and NH3-TPD.

get price

Bleaching clays, mineral adsorbents and catalytic

Our activated Bentonite adsorbents are a broad portfolio of products, including the industry-standard, F-Series of activated clays, which utilize trusted and proven activation technology for highly-effective purification of benzene, toluene, and xylene. The well-known F-Series acid-activated adsorbents offer the longest life span for

get price

(PDF) Structural Property Improvements of Bentonite with

Structural properties of acid activated Hanc ı l ı bentonites w ere close to those stated in the patents (T ay lor and Hills 1991; T aylor and Jenkins 1998; T

get price

Optimization of Acid Activation Conditions for Athi River

Figure 2. Effect of acid concentration and bleaching time on palm oil bleaching performance with 1% activated Athi River bentonite clay. 3.3 Effect of clay-acid ratio The effect of clay-acid ratio was studied at 100°C, with 5M H 2 SO 4, for 3hours. The results are shown in Fig. 3. 0 2 4 6 8 10 12 14 D 0 2 4 6 Molar concentration of sulphuric

get price

Bentonite, acid-leached Registration Dossier ECHA

Bentonite, acid-leached EC Number: 274-324-8 EC Name: Bentonite, acid-leached CAS Number: 70131-50-9 Molecular formula: unspecified for this UVCB substance IUPAC Name: silanedione alumane calcium hydrate silane sodium

get price

Activation of Jordanian Bentonite by Hydrochloric Acid and

bentonite Activated bentonite 1st 2nd 3rd 4th 5th 6th 7th 8th 9th 10th F :PercentageuptakeofZn(II)byrawandacidactivated bentoniteusingcolumntechnique. an increasein adsorbentdose was recorded. isincrease may be due to the higher adsorbent dose providing more +++) bentonite bentonite].

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Acid activated clays: Materials in continuous demand

Oct 01, 20161. Introduction. One application of calcium bentonite with a significant market is the decolourization of vegetable, animal and mineral oils. Most of the calcium bentonite used for filtering and decolourizing oils is acid activated ().Acid treatment with sulphuric or hydrochloric acid removes the calcium cations from the surfaces and edges of the layers, which increases

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Method for activation of bentonites Free Patents Online

Sep 30, 1975I claim 1. A method for the activation of bentonite which comprises treating the bentonite with 0.25-10% by weight of bentonite of an organic polymer and an aqueous alkaline solution, both known, the improvement being the incorporation into the treated bentonite of an amount of 0.01-10% by weight from the pretreated bentonite of a heavy metal salt selected

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Characterization, Acid Activation, and Bleaching

Acid activation caused an increase in moisture content to occur from 14.2% in raw clay to 17.4% in 3 M HCl activated clay, representing an increase of 3.2%. The moisture content for the clay lies within 10–18% recommended by Wiedermann [ 5 ] as being appropriate to ensure that the clay structure does not buckle and loses its adsorptive capacity.

get price

Bentonite/montmorillonite Active Clay,Bentonite Clay Buy

Bentonite/montmorillonite Active Clay,Bentonite Clay,Find Complete Details about Bentonite/montmorillonite Active Clay,Bentonite Clay,Bentonite,Granular Bentonite Clay,Acid Activated Bentonite Clay from Petroleum Additives Supplier or Manufacturer-Shanghai Oriental Slate International Co., Ltd.

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Petition to Include Acid-Activated Bentonite on the

Acid-activated bentonite (CAS #98561-46-7) of the present petition is composed of odorless, virtually dustless, free flowing granular particles. Typically, the product has a density of 50-55 lbs/ft3, pH (5% slurry in DI water) 0.43, granular mesh size (16/48 mesh). Once formed, the

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(PDF) Acid activation of Bentonite for use as a vegetable

Sep 10, 2020Acid activated bentonite (AAB) was prepared by acid treatment of an Algerian bentonite (Bent) originating from Maghnia repository. Thus a 200 g clay sample was reacted at 80°C ± 1°C for 6 h

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Intrinsic affinity of acid-activated bentonite towards

Apr 19, 2018Adsorptive properties of acid activated bentonite. The absorptive properties of the acid treated bentonite samples were examined in terms of affinity towards carbon dioxide and hydrogen. The use of basicity to correlate the affinity towards hydrogen was motivated by the interest devoted to the partial charge of the lattice oxygen atoms.

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