CN101195087A - Method for producing titanium dioxide preformed catalyst carrier with titanium dioxide aqua compound - Google Patents

Method for producing titanium dioxide preformed catalyst carrier with titanium dioxide aqua compound Download PDF

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CN101195087A
CN101195087A CNA2007101922266A CN200710192226A CN101195087A CN 101195087 A CN101195087 A CN 101195087A CN A2007101922266 A CNA2007101922266 A CN A2007101922266A CN 200710192226 A CN200710192226 A CN 200710192226A CN 101195087 A CN101195087 A CN 101195087A
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tio
titanium dioxide
titanium
drying
acid
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CN101195087B (en
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周立进
曾崇余
刘波
季先进
王继元
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Sinopec Yangzi Petrochemical Co Ltd
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Sinopec Yangzi Petrochemical Co Ltd
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Abstract

The invention relates to method for preparing titanium dioxide shaped catalyst carriers, the procedures comprise evenly mixing TiO2 hydrate slurry and compound bonding agent gelatin or solution, and attaining wet cakes of solid holdup 50-70% after drying by microwave, filling nitric acid to the wet cakes and squeezing and shaping on an extruders after complete kneading, drying post bodies which are shaped and baked under 500-700 DEGC, and attaining TiO2 shaped carriers whose lateral pressure strength is 100-170N/cm, and specific surface area reaches 50-87m2/g. The invention overcomes the shortcomings that the lateral pressure strength and the specific surface area are not compatible, and the drying method generates relatively large affect to the performance of carriers which are shaped, and the invention leads the carriers after being baked to have larger lateral pressure strength and specific surface area compatibly: the lateral pressure strength of obtained TiO2 carrier is 100-170N/cm, and the specific surface area reaches 50-87m2/g.

Description

The method for preparing dioxide preformed catalyst carrier with titanium by titanium dioxide hydrates
Technical field
The present invention relates to a kind of chemical process, be specifically related to a kind of method for preparing dioxide preformed catalyst carrier with titanium by titanium dioxide hydrates.
Background technology
TiO 2Owing to have " strong interaction " with carried metal, the acidity of active surface such as can regulate at characteristics, makes it become the SiO that continues 2, Al 2O 3As the catalyst carrier of new generation with development prospect, the research of this respect becomes one of the field of enlivening of catalyticing research gradually afterwards.TiO of the prior art 2Catalyst is Powdered mostly, has certain trouble aspect recycling, can not adapt in most industrial production the especially needs of fixed bed reactors.Although the various countries research worker is at TiO 2The technology of preparing aspect of shaping carrier has been done a lot of work, but still has weakness such as intensity difference, specific area are little, cost height, makes TiO 2Shaping carrier in industrial application also seldom.Therefore be devoted to TiO 2The research of article shaped preparing carriers method, the specific area of raising article shaped carrier and side pressure strength are to TiO 2The commercial Application of carrier has great importance.
About TiO 2Preparation method's Chinese scholars of carrier has been carried out some very useful explorations.Existing research is with TiO mostly 2Powder or titanium dioxide hydrates slurry are that raw material prepares shaping carrier.Adopt commercially available TiO 2Powder is that the prepared shaping carrier specific area of raw material is very little, and is necessary with special TiO 2Powder is a raw material.As disclosing among the Chinese patent CN1269787 with pyrogenic titanium dioxide as main component, before or after moulding with 0.1～5% organic acid or mineral acid treatment with preparation appropriate catalyst, gained article shaped surface area 37m 2/ g, cutting hardness is 25N only.Chinese patent CN1778466 has announced with the nano titanium dioxide powder to be the method for feedstock production TiO2 article shaped, the specific area of nano titanium dioxide powder is more than 200m2/g, its article shaped side pressure strength 30～150N/cm of prepared TiO2 article shaped, specific area 5～170m2/g.This method often cost of material is higher.
With the titanium dioxide hydrates slurry is the TiO of feedstock production 2Article shaped also has the research report, because TiO 2The hydrate solid holdup is low, can not straight forming, and generally to be dried to earlier and carry out moulding after powder adds the suitable adjuvants modulation again.It is primary raw material that Chinese patent CN1348814 adopts the wet metatitanic acid of the intermediate product of sulfuric acid method titanium pigment production, make metatitanic acid dry powder through 110 ℃ of dryings, pulverizing, the circular granular of diameter 5mm is kneaded, pushes, is shaped to adding pore creating material, adhesive, and drying, heat treatment make TiO 2Based catalyst carrier, the surface area of carrier can reach 4～20m 2/ g, compression strength 80～150N/.U.S. Pat 5484757 (CN1149261) with the specific area of drying greater than 200m 2The titanium dioxide hydrates slurry of/g after drying burning mistake rate reaches 15～40%, adds peptizing agent HNO as raw material 3Or formic acid and organic binder bond starch.Prepared diameter 3.5mm, the strip article shaped of length 1.5～15mm are after 350 ℃ of roastings, and its surface area can reach 178m 2/ g, but crushing strength 16N only, if sintering temperature is brought up to 950 ℃, crushing strength can be brought up to 191.7N, but surface area drops to 2.5m 2/ g.Peace will waits by force have been studied in metatitanic acid adding nanometer titanium dioxide titanium valve and has prepared TiO 2The method of article shaped studies show that, used more little, the prepared TiO in nano titanium oxide powder footpath 2Article shaped intensity is high more, specific area is big more; The ratio that metatitanic acid accounts for is big, though prepared TiO 2The article shaped specific area is big, but intensity difference.Mention in the WO2006048424 patent, the titanium dioxide hydrates slurry obtains the TiO of raw meal than wet cake straight forming through 120 ℃ of dryings 2Article shaped intensity reduces greatly.Though adopt the TiO of titanium dioxide hydrates slurry preparation 2The article shaped cost of material is low, because TiO 2The hydrate solid holdup is low, the energy consumption height in the dry run, and efficient is low, and drying means can produce bigger influence to the performance of shaping carrier.
Summary of the invention
At prior art with TiO 2Hydrate is that the shaping carrier of feedstock production exists side pressure strength and specific area can not produce bigger deficiencies such as influence to the performance of shaping carrier by drying means compatible and prior art, the purpose of this invention is to provide and a kind ofly prepare the method for titanic oxide shaping carrier by titanium dioxide hydrates, this method adopts TiO 2The hydrate slurry is a raw material, handles TiO in drying 2Carry out drying again after adding the compound binding agent modulation earlier before the hydrate slurry, drying means adopts microwave technology, adopts this method in energy efficient, make roasting after carrier have bigger side pressure strength and specific area concurrently.
Technical scheme of the present invention is: a kind ofly prepare the method for dioxide preformed catalyst carrier with titanium by titanium dioxide hydrates, step is as follows:
A) with TiO 2Hydrate slurry and compound binding agent gel or solution mix, and obtain the wet cake of solid holdup 50～70% through microwave drying;
B) in this wet cake, add nitric acid after fully mediating, extrusion molding on banded extruder;
C) this moulding cylinder is carried out drying and 500～700 ℃ of roastings, obtain side pressure strength and reach 100～170N/cm, specific area reaches 50～87m 2The TiO of/g 2Shaping carrier.
More optimize and more specifically operating procedure be:
With about 35%～40% (weight) of solid holdup, dry back specific area greater than 150m 2The TiO of/g 2The hydrate slurry is a raw material, at first with this TiO 2Hydrate slurry and a certain amount of concentration are that 3～30% compoiste adhering agent solution mixes, adopting the microwave technology drying to obtain solid holdup again is 50～70% wet cake, the salpeter solution that adds concentration 40～75% (weight) then, after mediating 50min, with the extrusion molding on banded extruder of gained material, drying, roasting obtain TiO then 2Shaping carrier.Its preparation process is seen accompanying drawing.
Described microwave is the electromagnetic wave of frequency between 300MHz～300GHz, and heating using microwave is because itself and common conduction and the mode of heating of convection current have very big difference.The present invention adopts microwave technology to TiO 2Slurry is handled, and under fast-changing electromagnetic field effect, the hydrone polarity orientation in the slurry will change along with the variation of external electric field, thereby produce violent motion, and this motion clocklike is subjected to closing on TiO 2The interference of molecule and binding agent molecule and obstruction have produced the effect that is similar to fricting movement, thereby make TiO 2It is more even that particle and compound binding agent gel or solution distribute, and the high time of drying efficiency is short, and the performance of final products is exerted an influence, and the intensity of shaped article and specific area are significantly improved.
At TiO 2In the moulding, binding agent kind and consumption have a significant impact moulding and article shaped intensity.With the carrier of the adhesive preparation of single cellulose family, pore size distribution disperses, and especially big hole is many, and intensity is obviously poor; And the carrier surface densification of employing polybasic carboxylic acid class adhesive preparation, extrusion molding is difficulty, is used for immersion process for preparing catalyst process and bursts broken serious.If both are combined, control the ratio of each component, can have the advantage of two kinds of binding agents concurrently, and enhancement effect is arranged, can improve extruded velocity, obviously improved the intensity and the specific area of carrier.And before dry, add compound binding agent earlier, and can prevent that the metatitanic acid molecule from reuniting in drying, cause the decline of intensity and specific area.
TiO of the present invention 2Hydrate slurry solid holdup is in 35%～40% (weight), and dry back specific area is greater than 150m 2/ g.
TiO of the present invention 2Hydrate at first mixes with the solution of compound binding agent, and then carries out drying and handle.
Compound binding agent of the present invention is a kind of in polyvinyl alcohol, polyethylene glycol, methylcellulose, carboxymethyl cellulose, sesbania powder or the soluble starch, add in a certain amount of deionized water with different amounts separately with a kind of in tartaric acid, lactic acid, citric acid or the oxalic acid, stirring and forming concentration is the compound binding agent that the transparent homogeneous gel of 3～30% (weight) is formed; Described " in polyvinyl alcohol, polyethylene glycol, methylcellulose, carboxymethyl cellulose, sesbania powder or the soluble starch a kind of ", with " in tartaric acid, lactic acid, citric acid or the oxalic acid a kind of ", the part by weight of these two kinds of materials is 1: 0.8～1: 1.2.
Compound binding agent consumption of the present invention is TiO 20.1～10% of powder quality.
TiO of the present invention 2Carry out under microwave action with the dry processing procedure of compound binding agent mixed slurry.The frequency of microwave is 600～9000M Hz, and microwave power is that 100～1000W is adjustable, selects for use a kind of power or multiple power to be used alternatingly in the dry run.
Microwave drying total time is 10～80min, and each processing time of microwave is no more than 5min, is no more than 1min break time.
TiO 2Hydrate add the compound binding agent aqueous solution through fully mix adopt microwave technology to carry out dry processing to obtain the wet cake of solid holdup 50～70% after, add a certain amount of nitric acid again and fully mediate, use the banded extruder extrusion molding again.
The concentration of salpeter solution of the present invention is 40～75% (weight), and nitric acid dosage is TiO 20.1～15% of powder quality.
The bar of extruding of the present invention dries in the shade and 100 ℃ of dryings after 48 hours, is warming up to 500～700 ℃ with the heating rate of 2.0 ℃/min, and makes TiO of the present invention behind the constant temperature 4h 2Shaping carrier.
The present invention has overcome prior art with TiO 2Hydrate is that the shaping carrier of feedstock production exists side pressure strength and specific area can not produce bigger deficiencies such as influence to the performance of shaping carrier by drying means compatible and prior art, the present invention in energy efficient, make roasting after carrier have bigger side pressure strength and specific area concurrently: the TiO that obtains 2The carrier side pressure strength reaches 100～170N/cm, and specific area reaches 50～87m 2/ g.
Description of drawings
Fig. 1 is a process chart of the present invention.
Concrete embodiment
Further describe technical characterictic of the present invention below by embodiment and comparative example, but be not limited to embodiment.
Embodiment 1, with reference to Fig. 1:
The 0.75g polyvinyl alcohol is dissolved in the 10g deionized water, adds 0.75g oxalic acid after cooling, stirring forms transparent homogeneous gel, adds the 81.08g solid holdup then and be 37% TiO 2Metatitanic acid hydrate mixing and stirring, the gained slurry heats 12min under the microwave condition of frequency 1500MHZ, power 300W, obtain solid holdup and be 60% TiO 2Wet cake is stand-by.The salpeter solution that in this wet cake, adds 1.5g60%, after mediating 50min, the rectangular of 5～6mm is cut in extrusion molding on banded extruder (extrudate diameter 3mm), heating rate with 2.0 ℃/min behind the dry 48h is warming up to 500 ℃, and makes TiO of the present invention behind the constant temperature 4h 2Shaping carrier.The shaping carrier that obtains has following performance: side pressure strength 108.45N/cm, specific area 87.26m 2/ g.
Embodiment 2
The 0.75g soluble starch is dissolved in 90 ℃ of 10g deionized waters, adds 0.75g tartaric acid after cooling, stirring forms transparent homogeneous gel, adds the 81.08g solid holdup then and be 37% TiO 2Metatitanic acid hydrate mixing and stirring, the gained slurry heats 12min under the microwave condition of frequency 2450MHZ, power 300W, obtain solid holdup and be 60% TiO 2Wet cake is stand-by.The salpeter solution that in this wet cake, adds 1.5g60%, after mediating 50min, the rectangular of 5～6mm is cut in extrusion molding on banded extruder (extrudate diameter 3mm), heating rate with 2.0 ℃/min behind the dry 48h is warming up to 600 ℃, and makes TiO of the present invention behind the constant temperature 4h 2Shaping carrier.The shaping carrier that obtains has following performance: side pressure strength 137.51N/cm, specific area 53.47m 2/ g.
Embodiment 3
The 0.75g methylcellulose is dissolved in 90 ℃ of 10g deionized waters, adds the 0.75g citric acid after cooling, stirring forms transparent homogeneous gel, adds the 81.08g solid holdup then and be 37% TiO 2Metatitanic acid hydrate mixing and stirring, the gained slurry heats 27min under the microwave condition of frequency 2450MHZ, power 150W, obtain solid holdup and be 60% TiO 2Wet cake is stand-by.The salpeter solution that in this wet cake, adds 1.5g60%, after mediating 50min, the rectangular of 5～6mm is cut in extrusion molding on banded extruder (extrudate diameter 3mm), heating rate with 2.0 ℃/min behind the dry 48h is warming up to 700 ℃, and makes TiO of the present invention behind the constant temperature 4h 2Shaping carrier.The shaping carrier that obtains has following performance: side pressure strength 173.33N/cm, specific area 58.34m 2/ g.
Embodiment 4
The 0.75g methylcellulose is dissolved in 90 ℃ of 10g deionized waters, adds 0.75g oxalic acid after cooling, stirring forms transparent homogeneous gel, adds the 81.08g solid holdup then and be 37% TiO 2Metatitanic acid hydrate mixing and stirring, the gained slurry heats 12min under the microwave condition of frequency 2450MHZ, power 300W, obtain solid holdup and be 60% TiO 2Wet cake is stand-by.The salpeter solution that in this wet cake, adds 1.5g60%, after mediating 50min, the rectangular of 5～6mm is cut in extrusion molding on banded extruder (extrudate diameter 3mm), heating rate with 2.0 ℃/min behind the dry 48h is warming up to 700 ℃, and makes TiO of the present invention behind the constant temperature 4h 2Shaping carrier.The shaping carrier that obtains has following performance: side pressure strength 158.74N/cm, specific area 50.61m 2/ g.
Embodiment 5
The 0.75g soluble starch is dissolved in 90 ℃ of 10g deionized waters, adds 0.75g lactic acid after cooling, stirring forms transparent homogeneous gel, adds the 81.08g solid holdup then and be 37% TiO 2Metatitanic acid hydrate mixing and stirring, the gained slurry heats 12min under the microwave condition of frequency 2450MHZ, power 300W, obtain solid holdup and be 60% TiO 2Wet cake is stand-by.The salpeter solution that in this wet cake, adds 1.5g60%, after mediating 50min, the rectangular of 5～6mm is cut in extrusion molding on banded extruder (extrudate diameter 3mm), heating rate with 2.0 ℃/min behind the dry 48h is warming up to 700 ℃, and makes TiO of the present invention behind the constant temperature 4h 2Shaping carrier.The shaping carrier that obtains has following performance: side pressure strength 142.17N/cm, specific area 57.26m 2/ g.
Comparative example 1
Compare with embodiment 1, do not adopt microwave drying technology, the initial water compound obtains dry powder through 120 ℃ of dry 24h of baking oven, adding compound binding agent, water and nitric acid then mediates, extrude wet product through 120 ℃ of dry 6h roastings then of baking oven, other material consumption is identical with embodiment 1 with operating condition, promptly gets the TiO of this comparative example 2Shaping carrier.The shaping carrier that obtains has following performance: side pressure strength 78.10N/cm, specific area 65.51m 2/ g.
Comparative example 2
Compare with embodiment 3, do not add citric acid and only adopt single methylcellulose as binding agent, other material consumption is identical with embodiment 3 with operating condition, promptly gets the TiO of this comparative example 2Shaping carrier.The shaping carrier that obtains has following performance: side pressure strength 133.56N/cm, specific area 50.46m 2/ g.
Comparative example 3
Compare with embodiment 3, do not add methylcellulose and only adopt single citric acid as binding agent, other material consumption is identical with embodiment 3 with operating condition, promptly gets the TiO of this comparative example 2Shaping carrier.The shaping carrier that obtains has following performance: side pressure strength 153.14N/cm, specific area 42.15m 2/ g.
Comparative example 4
This comparison example is the carrier by the described method preparation of U.S. Pat 5484757A.
(the BET surface area is greater than 200m with commercially available titanium dioxide metatitanic acid hydrate slurry 2/ g, the calcining loss is 26%) with the formic acid of (by the titanium dioxide hydrates slurry weight) 70% of 2.9% weight, 1.5% (by the weight of hydrate slurry) starch and 28.4% (by the weight of hydrate slurry) water mixes.Be squeezed into the bar that diameter is 3.5mm through banded extruder then.Subsequently this bar is cut into the section of length for about 6.5mm.Make TiO of the present invention after being warming up to 700 ℃ and this section of constant temperature 4h roasting with the heating rate of 2.0 ℃/min 2Shaping carrier.The shaping carrier that obtains has following performance: compression strength 113.17N/cm, specific area 32.03m 2/ g.
By embodiment and comparative example 1 as can be seen, the present invention is because at TiO 2Adopted microwave technology and compound binding agent in the hydrate dry run, the performance of shaping carrier is improved.
Embodiment 6, and is substantially the same manner as Example 1, but following change is arranged: the weight ratio of polyvinyl alcohol and oxalic acid is 1: 0.8.
Embodiment 7, and is substantially the same manner as Example 1, but following change is arranged: the weight ratio of polyvinyl alcohol and oxalic acid is 1: 1.2.
Embodiment 8, and is substantially the same manner as Example 1, but following change is arranged: oxalic acid changes tartaric acid into.
Embodiment 9, and is substantially the same manner as Example 1, but following change is arranged: oxalic acid changes lactic acid into.
Embodiment 10, and is substantially the same manner as Example 1, but following change is arranged: oxalic acid changes citric acid into.
Embodiment 11, and is substantially the same manner as Example 2, but following change is arranged: soluble starch and tartaric weight ratio are 1: 0.8.
Embodiment 12, and is substantially the same manner as Example 2, but following change is arranged: soluble starch and tartaric weight ratio are 1: 1.2.
Embodiment 13, and is substantially the same manner as Example 2, but following change is arranged: tartaric acid changes oxalic acid into.
Embodiment 14, and is substantially the same manner as Example 2, but following change is arranged: tartaric acid changes lactic acid into.
Embodiment 15, and is substantially the same manner as Example 2, but following change is arranged: tartaric acid changes citric acid into.
Embodiment 16, and is substantially the same manner as Example 3, but following change is arranged: methylcellulose molten with weight ratio citric acid be 1: 0.8.
Embodiment 17, and is substantially the same manner as Example 3, but following change is arranged: methylcellulose molten with weight ratio citric acid be 1: 1.2.
Embodiment 18, and is substantially the same manner as Example 3, but following change is arranged: citric acid changes oxalic acid into.
Embodiment 19, and is substantially the same manner as Example 3, but following change is arranged: citric acid changes lactic acid into.
Embodiment 20, and is substantially the same manner as Example 3, but following change is arranged: citric acid changes tartaric acid into.
Embodiment 21, and is substantially the same manner as Example 4, but following change is arranged: methylcellulose molten with weight ratio oxalic acid be 1: 0.8.
Embodiment 22, and is substantially the same manner as Example 4, but following change is arranged: methylcellulose molten with weight ratio oxalic acid be 1: 1.2.
Embodiment 23, and is substantially the same manner as Example 4, but following change is arranged: oxalic acid changes citric acid into.
Embodiment 24, and is substantially the same manner as Example 4, but following change is arranged: oxalic acid changes lactic acid into.
Embodiment 25, and is substantially the same manner as Example 4, but following change is arranged: oxalic acid changes tartaric acid into.
Embodiment 26, and is substantially the same manner as Example 5, but following change is arranged: the weight ratio of soluble starch and lactic acid is 1: 0.8.
Embodiment 27, and is substantially the same manner as Example 5, but following change is arranged: the weight ratio of soluble starch and lactic acid is 1: 1.2.
Embodiment 28～32, and is basic identical with embodiment 6～10 respectively, but polyvinyl alcohol changes carboxymethyl cellulose into.
Embodiment 33～37, and is basic identical with embodiment 11～15, but soluble starch changes the sesbania powder into.

Claims (6)

1. one kind prepares the method for dioxide preformed catalyst carrier with titanium by titanium dioxide hydrates, and step is as follows:
A) with TiO 2Hydrate slurry and compound binding agent gel or solution mix, and obtain the wet cake of solid holdup 50～70% through microwave drying;
B) in this wet cake, add nitric acid after fully mediating, extrusion molding on banded extruder;
C) this moulding cylinder is carried out drying and 500～700 ℃ of roastings, obtain side pressure strength and reach 100～170N/cm, specific area reaches 50～87m 2The TiO of/g 2Shaping carrier.
2. according to claim 1ly prepare the method for dioxide preformed catalyst carrier with titanium, it is characterized in that the concrete operations step is by titanium dioxide hydrates:
About 35%～40% with the weight solid holdup, dry back specific area is greater than 150m 2The TiO of/g 2The hydrate slurry is a raw material, at first with this TiO 2Hydrate slurry and concentration are that 3～30% compoiste adhering agent solution mixes, and the compound binding agent consumption is TiO 20.1～10% of powder quality; Adopting the microwave technology drying to obtain solid holdup again is 50～70% wet cake, adds the salpeter solution of weight concentration 40～75% then, mediate 50min after, with the extrusion molding on banded extruder of gained material, drying, roasting obtain TiO then 2Shaping carrier.
3. the method for preparing dioxide preformed catalyst carrier with titanium by titanium dioxide hydrates according to claim 1, it is characterized in that, described compound binding agent is a kind of in polyvinyl alcohol, polyethylene glycol, methylcellulose, carboxymethyl cellulose, sesbania powder or the soluble starch, with a kind of the joining in the deionized water in tartaric acid, lactic acid, citric acid or the oxalic acid, stir, form weight concentration and be 3～30%, the compound binding agent that transparent homogeneous gel is formed; Described " in polyvinyl alcohol, polyethylene glycol, methylcellulose, carboxymethyl cellulose, sesbania powder or the soluble starch a kind of ", with " in tartaric acid, lactic acid, citric acid or the oxalic acid a kind of ", the part by weight of these two kinds of materials is 1: 0.8～1: 1.2.
4. according to claim 2ly prepare the method for dioxide preformed catalyst carrier with titanium, it is characterized in that the frequency of used microwave is 600～9000M Hz by titanium dioxide hydrates.
5. according to claim 2ly prepare the method for dioxide preformed catalyst carrier with titanium, it is characterized in that the power of used microwave is that 100～1000W is adjustable, select for use a kind of power or multiple power to be used alternatingly in the dry run by titanium dioxide hydrates.
6. according to claim 4 or the 5 described methods that prepare dioxide preformed catalyst carrier with titanium by titanium dioxide hydrates, it is characterized in that, used microwave drying is for repeatedly being interrupted dry run, dry total time 10～80min, each microwave treatment time is no more than 5min, is no more than 1min break time.
CN2007101922266A 2007-12-21 2007-12-21 Method for producing titanium dioxide preformed catalyst carrier with titanium dioxide aqua compound Active CN101195087B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102527371A (en) * 2010-12-14 2012-07-04 韩国科学技术研究院 SCR denitrification catalyst and the fabrication method thereof using titania hydrate slurry
CN103360048A (en) * 2013-07-25 2013-10-23 中国石油化工股份有限公司 Titanium dioxide porous ceramics and preparation method
CN109092373A (en) * 2018-07-13 2018-12-28 南京卡邦科技有限公司 A kind of preparation method of high-purity titanium oxide catalyst support
CN111450812A (en) * 2019-01-22 2020-07-28 中国石油化工股份有限公司 Composition and method for preparing titanium dioxide molded product

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5484757A (en) * 1994-06-02 1996-01-16 Norton Chemical Process Products Corp. Titania-based catalyst carriers
CN100369667C (en) * 2005-10-14 2008-02-20 南京工业大学 Nanometer titanium dioxide forming substances and preparation thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102527371A (en) * 2010-12-14 2012-07-04 韩国科学技术研究院 SCR denitrification catalyst and the fabrication method thereof using titania hydrate slurry
CN102527371B (en) * 2010-12-14 2016-08-03 韩国科学技术研究院 SCR denitration and utilize the preparation method of titanium dioxide hydrates serosity
CN103360048A (en) * 2013-07-25 2013-10-23 中国石油化工股份有限公司 Titanium dioxide porous ceramics and preparation method
CN109092373A (en) * 2018-07-13 2018-12-28 南京卡邦科技有限公司 A kind of preparation method of high-purity titanium oxide catalyst support
CN111450812A (en) * 2019-01-22 2020-07-28 中国石油化工股份有限公司 Composition and method for preparing titanium dioxide molded product

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