JP2002265624A - Polymer particle supporting metal compound - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a polymer particle supporting a metal compound, having a large specific surface area, a high catalytic efficiency in a reaction, ready handleability, readily separating and recovering a catalyst in a vapor phase or liquid phase. SOLUTION: This polymer particle supporting a metal compound is obtained by supporting a metal element compound of the group I to VIII on a porous polymer particle having 1,000-80,000 m<2> /kg BET specific surface area.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to metal compound-supported polymer particles in which a metal compound catalyst is supported on porous polymer particles having a large specific surface area. More specifically, the present invention relates to a metal compound-supported polymer particle which has a large specific surface area, is excellent in catalyst efficiency, and can support a large amount of catalyst, and can be efficiently separated and recovered even in a gas phase or a liquid phase. .

[0002]

2. Description of the Related Art Many catalyst-supporting particles using a compound having a catalytic function such as a metal compound by supporting a catalyst on an inorganic or organic carrier are known. For example, smoke and exhaust gas purification, deodorization, antibacterial, air purification,
Gas-phase reactions such as photocatalyst-carrying treatment, biochemical reactions such as insolubilizing enzymes and insoluble bacteria, and organic compound synthesis reactions.
There are liquid-phase reactions such as oxidation-reduction reaction and wastewater treatment.

[0003] In these reactions, a catalyst carrier is used to carry a catalyst on an inorganic or organic solid, such as granules, films, fibers, or porous materials, to effectively utilize the catalyst active component, or to handle or generate the catalyst. The purpose is to make it easier to separate and collect materials. At that time, there is also a role of increasing the surface area to improve the catalyst performance.

For example, Japanese Patent Application Laid-Open No. 2000-126761 discloses a water purification apparatus characterized in that a photocatalyst is supported on a porous sintered body obtained by sintering a polymer powder. However, this polymer sintered body is
Since only a small specific surface area can be formed, there is a problem that the catalyst function cannot be sufficiently exhibited.

Further, Japanese Patent Application Laid-Open No. 5-49862 discloses that
When deodorizing gas containing malodorous components in the presence of ozone, peroxide and iron, manganese, cobalt, nickel,
Chrome, titanium, zirconium, copper, silver, zinc, tin,
An ozone deodorizing catalyst and a method for deodorizing, characterized by using a treating agent containing a metal selected from lead, platinum, palladium, magnesium, calcium and barium or one or more of these compounds, are disclosed. Although this deodorizing catalyst is a molded product of a metal compound catalyst containing activated carbon and colloidal silica or an organic polymer binder, there is a problem that the handling life such as catalyst life and catalyst desorption is not sufficient. .

Further, JP-A-8-103487 discloses zinc ion-exchanged zeolites and manganese and metallic zirconium, copper, iron, cobalt, nickel, silver,
1 selected from gold, palladium or a group of these compounds
Deodorants comprising more than one metal or compound are disclosed. As a catalyst carrier, paper, fiber, resin, and the like, it is disclosed that a powdery metal compound catalyst is formed into a sheet by using a binder. There's a problem.

JP-A-11-276844 discloses a deodorant comprising a first component of a gold element supported on activated carbon fibers and a second component comprising an oxide of a group such as magnesium, aluminum and silicon. And a manufacturing method. It is stated that a deodorizing material capable of exhibiting both the adsorption function and the decomposition function of odorous substances can be supplied even in a special environment such as under ultraviolet irradiation. Although the handleability is good, there is a problem that the catalyst function cannot be sufficiently performed due to the low catalyst carrying capacity.

Japanese Patent Application Laid-Open No. Hei 8-71573 discloses that
In an apparatus for contact-treating water containing an organic substance, a photocatalyst carrier in which a photocatalyst is supported on the surface of a light-transmissive support having an uneven surface, a light source for irradiating the photocatalyst carrier with light, and an oxygen-containing gas A water treatment method and apparatus which are easy to handle, compact and inexpensive, and have high treatment efficiency, characterized by having means for supplying water. However, when the photocatalyst is exchanged, there has been a problem that the catalyst partially falls off from the support and the handling property is poor.

[0009] As described above, these catalyst carriers still have problems in satisfying both the catalytic ability and the handling properties such as desorption of the catalyst. Further, there has been a demand for a catalyst carrier having an even larger specific surface area, a supporting ability, and excellent handling properties.

[0010]

SUMMARY OF THE INVENTION An object of the present invention is to provide a metal compound having a large specific surface area, high catalytic efficiency in a reaction, easy handling, and easy separation and recovery of a catalyst even in a gas phase or a liquid phase. The purpose is to provide supported polymer particles.

[0011]

The present invention SUMMARY OF THE INVENTION are those on the porous polymer particles having a BET specific surface area 1000~80000m 2 / ^kg, it relates to a metal compound-supported polymer particles metal compounds of elements I~VIII group is formed by carrying It is.

In the present invention, the size of the polymer particles is 1 to 3
The present invention relates to the metal compound-supported polymer particles, wherein the particle diameter is 0 μm and the ratio of the volume average particle diameter to the number average particle diameter is 1.0 to 1.5.

According to the present invention, the porosity index of the polymer particles is 5
-100.

According to the present invention, the average pore size of the polymer particles is as follows:
The present invention relates to the metal compound-supported polymer particles having a particle size of 0.01 to 0.2 μm.

The present invention relates to the metal compound-supported polymer particles, wherein the metal compound is a metal compound having a catalytic action.

The present invention relates to the metal compound-supporting polymer particles, wherein the metal compound is a zirconia compound or a titanium compound.

The present invention relates to the metal compound-supported polymer particles, wherein the polymer particles are polyamide.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION The supported metal compound of the metal compound-supported polymer particles of the present invention is a compound of a group I-VIII metal element. Preferably, they are from Group Ib to Group VII. More preferably, Ib group, IIa group, IIIa group, IIIb group, IVa group, IVb
Group, Va, Vb, VIa, VIb, VIIb and VIII metal elements. Examples of particularly preferred metal elements are silver, gold,
Aluminum, indium, zinc, ytrim, titanium, zirconium, germanium, tin, lead, molybdenum, tungsten, manganese, iron, cobalt, nickel, ruthenium, rhodium, platinum and the like. More preferred are titanium compounds and zirconium compounds.

As the metal compound in the present invention, a hydroxide, an oxide, a chloride or a composite thereof can be used. Further, a reduced product of a metal compound can be used.

[0020] The porous polymer particles of the present invention comprise at least 90% by weight, more preferably at least 98% by weight.
Are preferably spherical particles. If the content of the spherical particles is less than 90% by weight, the fluidity of the powder is inferior.

The number average particle diameter of the porous polymer particles used for the carrier of the present invention is 1 to 30 μm, preferably 1 to 25 μm.
μm is desirable. When the number average particle diameter is smaller than 1 μm, handling operation becomes worse. If the number average particle diameter is larger than 30 μm, it is not suitable for use as a catalyst carrier.

The porous polymer particles of the present invention have a number average particle size (or number standard average particle size) in the particle size distribution.
Volume average particle diameter (or volume-based average particle diameter)
Is desirably 1.0 to 1.5, preferably 1.0 to 1.3. If the ratio of the volume average particle diameter to the number average particle diameter (particle diameter distribution index PDI) is more than 1.5, the particle diameter distribution becomes wide, and particles having a uniform particle diameter cannot be obtained. When applied to the catalyst functional particles, the uniform particle diameter is preferable because physical and chemical properties higher than expected may be exhibited.

In the above, the particle size distribution index is expressed by the following equation. Number average particle size:

(Equation 1) Volume average particle size:

(Equation 2) Particle size distribution index:

(Equation 3) Here, Xi; individual particle diameter, n is the number of measurements.

The porous polymer particles of the present invention have a specific surface area of 1,000 to 80,000 m ² / kg. Preferably, 30
00 to 60000 m ² / kg, more preferably 3000 to
Desirably, it is 40000 m ² / kg. The specific surface area is measured by the BET method using nitrogen adsorption. When the BET specific surface area is 1000 m ² / kg, the supporting capacity is small and the performance as catalyst particles is reduced, which is not preferable.
If it is more than 000 m ² / kg, handling becomes poor.

The porosity index (RI) of the porous polymer particles of the present invention is preferably from 5 to 100. More preferably, the porosity index is from 5 to 70. Here, the porosity index (RI) is defined as the ratio of the specific surface area of the porous spherical particles to the specific surface area of the smooth spherical particles having the same diameter, and can be expressed by the following equation. If the porosity index is less than 5, the degree of porosity is too low, and the effect as a carrier such as a catalyst is small. If the porosity is larger than 100, the shape becomes unstable. Therefore, the above range is preferable for the catalyst carrier and the like.

[0026]

(Equation 4) Here, RI: porosity index, S: specific surface area of porous particles
[m ² / kg], S ₀ ; specific surface area of smooth spherical particles having the same particle diameter [m ² / k
g]. S ₀ can be obtained according to the following equation. That is,
Assuming that the observed number average spherical particle diameter d _obs [m] and the polymer density ρ [kg / m ³ ], the specific surface area S ₀ of the smooth sphere can be expressed by the following equation.

(Equation 5)For example, the density of polyamide 6 and polyamide 66
Crystal phase 1230 kg / m ³, Amorphous phase 1100kg / m³When
Then, the crystallinity was calculated and the density was calculated.

The average pore size of the porous polymer particles of the present invention is preferably from 0.01 to 0.2 μm. More preferably, it is 0.02 to 0.1 μm. When the average pore diameter is smaller than 0.01 μm, it becomes difficult to support the catalyst. If the average pore diameter is larger than 0.2 μm, the catalyst carrying power will be low, so that the catalyst carrier preferably has an average pore diameter in the above range. The pore size is measured with a mercury porosimeter.

In the present invention, it is preferable to support a metal compound having a catalytic action. As the metal compound having a catalytic action, a metal compound such as a zirconium compound, a titanium compound, and a platinum compound is preferable.

The loading amount of the metal compound on the polymer particles is preferably 0.001 to 50 g per 1 g of the polymer particles.
It is. More preferably, it is 0.01 to 20 g / g.

The metal compound-supported polymer particles of the present invention are
Since the specific surface area is large and the supporting amount of the metal compound can be increased, when the metal compound having a catalytic action is supported on the porous fine particulate polymer supporting body, the catalyst supporting particles have excellent catalytic performance. . As the catalytic function, it can be used for wet oxidation of ammonia, adsorbing action of wastewater treatment, decomposing action of odor components, photooxidizing action, enzymatic action in living body field, and antibacterial action in hygiene field.

The form in which the metal compound-supporting polymer particles of the present invention are used is as follows.
Alternatively, the granules can be used as a filter element or the like by compressing and molding the granules into a disk shape or the like.
In addition, since the size of the porous particles is relatively large, they are excellent when packed in a column, used in contact with a reactant in a solid phase or liquid phase, and then separated or used as a filter element. The resulting porous particles have a catalytic function.

The porous polymer particles of the present invention are preferably polyamide. Polyamide is desirable because it has the property of adsorbing metal compounds. As a polyamide, it is crystalline and has a melting point of 110 to 320 ° C., preferably,
A temperature of 140 to 280 ° C. is desirable.

As the crystalline polyamide, various known polyamides can be used. For example, it can be obtained by ring-opening polymerization of a cyclic amide or polycondensation of a dicarboxylic acid and a diamine. As monomers, ε-caprolactam, ω
Crystalline polyamide obtained by ring-opening polymerization of a cyclic amide such as laurolactam, polycondensation of amino acids such as ε-aminocaproic acid, ω-aminododecanoic acid, ω-aminoundecanoic acid, or oxalic acid, adipic acid, sebacic acid , Terephthalic acid, isophthalic acid, dicarboxylic acids and derivatives such as 1,4-cyclohexyldicarboxylic acid and diamines such as ethylenediamine, hexamethylenediamine, 1,4-cyclohexyldiamine, m-xylylenediamine, pentamethylenediamine and decamethylenediamine And those obtained by polycondensation.

The crystalline polyamide is a crystalline polyamide composed of the above homopolymer or a copolymer thereof or a derivative thereof. Specifically, polyamide 6, polyamide 66, polyamide 11, polyamide 12, polyamide 6
10, polyamide 66 / 6T (T represents a terephthalic acid component) and the like. It may be a mixture of the above polyamides. Particularly preferably, polyamide 6 and polyamide 66 are preferred.

The molecular weight of the polyamide is 2,000 to 10
000 is preferred. More preferably 5,000-
40,000.

Hereinafter, a method for producing the metal compound-supported polymer particles of the present invention will be described. The production method will be described with an example where the polymer particles are polyamide.

The polyamide porous particles are produced by mixing a polyamide solution, a polyamide non-solvent and water to form a temporary uniform solution and then depositing a polymer. In this case, the solvent composition in which the polyamide solution, the non-solvent and the water form a homogeneous solution is important, and uniform porous particles are deposited by utilizing the phase separation of the polymer solution.

As the solvent used for the polyamide solution, formic acid, aromatic alcohol-based solution and the like are preferable. As the solvent for the aromatic alcohol-based solution, specifically, 0-
Cresol, m-cresol, p-cresol, chlorophenol, phenol and the like are preferred. These are preferred because they are partially compatible with water.

The polyamide solution has a polyamide content of 0.1 to
30% by weight and 99.8-70% by weight of solvent, totaling 100% by weight. Preferably, the polyamide is 0.2
２５25% by weight. 30% by weight of polyamide
When it exceeds, it may be difficult to dissolve or a uniform solution may not be obtained. Further, even if dissolved, the viscosity of the solution increases, which makes it difficult to handle, which is not preferable. If the proportion of the polyamide is lower than 0.1% by weight, the polymer concentration is low and the productivity of the product is low, such being undesirable.

The non-solvent for the polyamide is preferably one in which the solvent and water are at least partially compatible. Boiling point 100 ° C
The following aliphatic alcohols and ketones are preferred. In addition, it is important to be compatible with water. For example, methanol, ethanol, propanol, isopropanol,
Acetone, methyl ethyl ketone and the like are preferred.

The proportion of the non-solvent added to the polymer is preferably such that the total proportion of the non-solvent and water is greater than the proportion of the polymer solution added. If the proportion of the non-solvent and water in the polyamide is less than the proportion of the polymer solution, the polymer may not be sufficiently precipitated, which is not preferable. On the other hand, when the amount is extremely large, the amount of the solvent in the finishing step is too large, which is not economical.

The non-solvent of the polyamide and the weight% of water are preferably 2 to 90% by weight with respect to 100% by weight in total. Preferably, it is 5-85% by weight. If the proportion of water is less than 2% by weight, spherical particles will not be formed. On the other hand, if the proportion of water is more than 90% by weight, the use of an aromatic alcohol as a solvent is not preferable because water undergoes phase separation.

The order of adding the solution may be such that a polyamide non-solvent is added to the polyamide solution, and then water is added. Alternatively, the polymer solution may be added after mixing the polyamide non-solvent and water. Further, the polymer non-solvent may be added after mixing water with the polymer solution. Preferably, the polymer solution is added after mixing the polymer non-solvent and water. Any method may be used as long as the uniformity of the polymer solution system is maintained.

It is important that the proportions of the polymer solution, the polymer non-solvent and the water be compatible with each other. A uniform solution is formed, and over time, the polymer particles are precipitated. The time for forming a uniform solution is, for example, about 0.1 second to 120 minutes.
It is important to form a homogeneous solution, even temporarily.
If necessary, appropriate stirring may be added.

The temperature at which polymer particles are precipitated from the solution of the above three components is preferably from 5 to 70 ° C. More preferably, it is 10 to 60C. Depending on the temperature, the composition range in which the solution is uniform may be widened. If the temperature is lower than 5 ° C., the uniform region may be narrow. Temperature 70
If the temperature is higher than 0 ° C., the vapor pressure of the solvent increases, which is not preferable.

The precipitated polymer particles can be isolated from the solution by a conventional method such as centrifugation, filtration, decantation and the like. For example, the suspended solution may be diluted with methanol, decanted, and then centrifuged. It may be washed several times with methanol and centrifuged. Next, it may be subjected to hot air drying and vacuum drying.

The polymer particles produced in this manner become porous polyamide particles having a uniform particle size. For example, it has a uniform particle diameter of 1 to 30 μm and a bulk density of 0.1 to 0.4 g / cm ³ . BET specific surface area 1000
~ 80000 m ² / kg, preferably 3000 to 60000
m ² / kg. Average particle size is preferably 2 to 25 μm
It is.

The method for supporting the metal compound on the porous polymer particles of the present invention is not particularly limited, but can be carried out, for example, as follows. Water,
The metal compound is dispersed in a solvent such as methanol, ethanol, or acetone, and the mixture is stirred. Metal compound concentration ^{10-2 to} the ^- stirring approximately 1 mol / L, dissolved to the metal compound is adsorbed on the polymer particles, after 1 to 72 hours, coming to precipitate. At that time, the temperature may be room temperature,
It may be heated to the boiling point of the solvent. The metal compound-loaded polymer particles are isolated and dried. If necessary, the heat treatment is preferably performed at a temperature below the temperature at which the morphology of the polymer is not impaired.

The metal compound particles are adsorbed and carried on the surface of the carrier in the form of fine particles having a size of 10 to 100 nanometers. The amount of the metal compound supported by the metal compound particle-supported polymer particles is 0.001 to 5 per gram of the porous particles.
0 g. Preferably it is 0.01 to 20 g / g.

The metal compound-supported polymer particles of the present invention are porous and have a large surface area, and it is considered that the metal compound is adsorbed to the pores between the spherulites of the polymer. In addition to being large and carrying a large amount of metal compounds, the particle size is relatively large,
The catalyst particles have a small apparent volume and are easy to handle. Since it is adsorbed on the fine pores of the crystalline polymer carrier, it seems to be advantageous for the sustained release of the catalyst and the life of the catalyst.

[0051]

EXAMPLES The present invention will be described below in detail with reference to examples, but the present invention is not limited to these examples. The test and evaluation methods in Examples and Comparative Examples are as follows.

[Measurement / Evaluation Methods] (Average Particle Size and Particle Size Distribution) The particles were observed with a scanning electron microscope to determine the particle shape and size. For spherical particles, the particle size was read. In each case, the number average particle diameter and volume average particle diameter of about 100 pieces were calculated. Then the PDI was calculated. The above equation was used.

(Pore Size Distribution) Measured with a mercury porosimeter. The pore size distribution was measured and expressed as an average pore size.

(Specific surface area / porosity index) Measured by a three-point BET method by nitrogen adsorption. The porosity index (RI) was calculated using the above equation.

(Amount of Metal Compound Carried) The metal element was determined by ICP. It is shown by the weight ratio of the metal element to the carrier polymer particles.

REFERENCE EXAMPLE 1 (Production of Porous Polyamide Particles) Polyamide 6 (molecular weight: 13,000) was made into a solution having a concentration of 5.0% by weight in m-cresol at 14.3% by weight, and methanol at 71.4% by weight and water at 14%. 0.3% by weight. After stirring for 1 minute, the solution became homogeneous. After 2 minutes with stirring, a polymer had precipitated. 2
The precipitation was completed by allowing to stand for 4 hours. Thereafter, the polymer was isolated by centrifugation.

When the obtained polymer sample was observed with a scanning electron microscope, the number average particle size was 7.81 μm, the volume average particle size was 8.44 μm, and the PDI was 1.08. The specific surface area of the polymer particles is 9800 m ² / kg, and the RI
Was 16.6. It was a porous spherical particle.

Example 1 (Support of zirconium compound) Zirconium sulfate Zr (S
O4) the ₂ · 4H ₂ O was added to 0.1g of methanol 20 ml, stirred, and the methanol solution was completely dissolved. On the other hand, 1 g of the porous polyamide particles obtained in Reference Example 1 was dispersed in 50 ml of methanol at room temperature. Then, add all the methanol solution of zirconium sulfate and continue stirring.
Two days later, the zirconium compound was precipitated on the porous polymer particles. The solution was filtered, and the polymer supporting the zirconium oxide derivative was isolated and heat-treated at a temperature of 200 ° C. for 5 seconds. The supported amount was 0.086 g / g in terms of zirconium per 1 g of the catalyst-supported polymer.

Further, zirconium sulfate was similarly stirred and dissolved in the absence of polymer particles, and precipitated and precipitated two days and nights later. From the elemental analysis and X-ray diffraction, the compound was found to be a sulfur-containing zirconium oxide derivative.

Example 2 (Titanium-based compound loading) 10 g of the porous polyamide particles obtained in Reference Example 1 was dispersed in 200 ml of methanol at room temperature, and titanium sulfate hydrate 3Ti ₂ (SO ₄ ) ₃ .H
10 g of ₂ SO ₄ .25H ₂ O was dispersed. Titanium sulfate is
Dissolved after 1 hour. The stirring was continued as it was, and after two days and nights, the solution was filtered to isolate a titanium oxide sulfate-supported polymer. The supported amount was 0.05 g / g of titanium equivalent per 1 g of the polymer. Heat treatment was performed at a temperature of 200 ° C. for 5 seconds.

Example 3 (Catalytic activity of polymer supporting zirconium-based catalyst) Example 1
The zirconium oxide-supported polymer particles containing sulfate groups obtained in the above were inserted into a reaction tube of a right-angle quartz tube having an inner diameter of 10 mm. The packed bed was 20 cm. As a sample for removing nitrogen, a mixed gas diluted with argon so that the amount of nitrogen monoxide was 5000 ppm was allowed to flow at 25 ° C. at a flow rate of 50 ml / min, and the gas that passed through the packed bed was measured by gas chromatography. As a result, 90 minutes after distribution time of 90 minutes
0 ppm, 900 ppm after 30 minutes, 10 ppm after 500 minutes
It was 00 ppm. It was found that nitric oxide had been removed. The nitric oxide removal effect persisted for a relatively long time.

Comparative Example 1 Zirconium sulfate was dissolved in methanol without adding polymer particles and allowed to stand for 72 hours to obtain zirconium oxide containing sulfate groups. 0.16 g of the obtained powder was heat-treated and used as a catalyst sample in the same manner as in Example 3 except for the above. As a result, after a circulation time of 10 minutes, nitric oxide was 7000 pp.
m, 1500 ppm after 30 minutes, 1500 after 500 minutes
ppm. Although nitric oxide was removed, the removal effect was not maintained as compared with the example.

Example 4 (Catalytic Activity of Titanium-Based Catalyst-Supporting Polymer) Using a titanium oxide-supporting polymer obtained in Example 2 as a catalyst, a human urine sample (COD concentration: 20 mg / liter) obtained by filtering coagulated sediment was used as a sample. Was. The removal of COD was tracked while supplying oxygen under UV irradiation.
After 5 minutes, the COD was 3 mg / liter. After 10 minutes, it was 2 mg / liter.

Comparative Example 2 A catalytic reaction with a titanium oxide derivative was carried out in the same manner as in Example 4 except that no supported polymer particles were used. The COD after 5 minutes was 19 mg / l, and also after 10 minutes, 18 mg / l, and no COD decomposition action was observed.

Example 5 (Handling Property of Catalyst Particles) When replacing the titanium oxide catalyst-carrying particles of Example 4, the catalyst could be easily removed as the supporting particles.

Comparative Example 3 On the other hand, when no catalyst was supported, the catalyst was partially dropped from the catalyst layer after the reaction. The catalyst powder was so fine that it fell off the catalyst layer when it was replaced, resulting in poor handling.

[0067]

According to the present invention, a polymer compound is supported on a polymer porous particle. In the reaction with a soluble component in a liquid phase and a gas phase, excellent catalytic action and efficient separation and recovery are achieved. Useful and useful metal compound-supported polymer particles can be supplied. The metal compound-supported polymer particles of the present invention are usefully used as catalysts for various reactions.
For example, it can be used as catalyst-carrying particles for wet oxidation of ammonia, enzyme or bacterial carrier, antibacterial action and the like.

Continued on the front page (72) Inventor Kimio Nakayama 8-1 Goi-minamikaigan, Ichihara-shi, Chiba Ube Industries, Ltd. Polymer Research Laboratory (72) Inventor Shigeru Yao 8-1-1 Goi-minamikaigan, Ichihara-shi, Chiba Ube 4F070 AA54 AB09 AB14 AC13 AC20 AE16 DA31 DA33 DB09 DC02 DC03 DC05 DC11

Claims (7)

[Claims] 1. BET specific surface area: 1000 to 80000 m ²
Metal compound-supported polymer particles in which a metal element compound of a group I to VIII is supported on porous polymer particles of 1 kg / kg. 2. The polymer particles have a size of 1 to 30 μm, and the ratio of the volume average particle size to the number average particle size is 1.0
2. The metal compound-carrying polymer particles according to claim 1, which has a molecular weight of from 1.5 to 1.5. 3. The metal compound-carrying polymer particles according to claim 1, wherein the porosity index of the polymer particles is 5 to 100. 4. The polymer particles have an average pore size of 0.01 to 0.01.
The metal compound-supported polymer particles according to claim 1, wherein the particle size is 0.2 μm. 5. The metal compound-carrying polymer particles according to claim 1, wherein the metal compound is a metal compound having a catalytic action. 6. The metal compound-carrying polymer particles according to claim 1, wherein the metal compound is a zirconia compound or a titanium compound. 7. The metal compound-carrying polymer particles according to claim 1, wherein the polymer particles are made of polyamide.