TWI658864B - Porous material and method for preparing the same, and catalyst composition employing the same - Google Patents

Abstract

The disclosure provides a porous material and a catalyst composition containing the same, and a method for preparing the porous material. The porous material is composed of 98-99.5 parts by weight of fumed silica and 0.5 to 2 parts by weight of metal oxide. Wherein the specific surface area of the porous materials based 650m ² / g to 700m ² / g. The metal oxide is selected from the group consisting of magnesium oxide, aluminum oxide, potassium oxide, titanium oxide, and iron oxide.

Description

Porous material and preparation method thereof, and catalyst composition containing same

The present disclosure relates to a porous material, a method for preparing the same, and a catalyst composition containing the same.

With the rapid economic development, the depletion of petroleum resources, environmental pollution and global warming, there is an urgent need to find a new energy system with high energy density, environmental protection and sustainable development. Therefore, as a substitute energy source, the synthesis gas produced by biomass gasification has also received increasing attention.

However, during the production of syngas from biomass in a fluidized bed reactor, a considerable amount of tar is produced at the same time. The tar contained in syngas can cause fouling and blockage in subsequent downstream processes and equipment. Condensed tar can cause serious fouling of gas cleaning equipment, tar entering the generator set can hinder the operation of syngas applications, and mixing tar with condensed water can easily cause difficult water treatment problems. Therefore, when the biomass gasification synthesis gas is to be used in a power generation system, the tar content in the synthesis gas needs to be reduced. In the tar removal technology, steam reforming technology is generally the mainstream. However, in the absence of a catalyst, the reaction temperature of steam reforming needs to be higher than 900 ° C. to catalyze the recombination of tar into a high calorific value gas. Although, steam reforming technology in the presence of catalyst To remove tar, the reaction temperature can be reduced to 650-900 ° C, but the traditional tar conversion catalyst composition still has room for improvement in tar conversion rate.

Therefore, the industry needs a novel catalyst composition to solve the problems encountered in the prior art.

According to an embodiment of the disclosure, the disclosure provides a porous material, which may be composed of about 98-99.5 parts by weight of fumed silica and about 0.5 to 2 parts by weight of a metal oxide, wherein the specific surface area of the porous material may be about 650m ² / g to 700m ² / g. The metal oxide can be selected from the group consisting of magnesium oxide, aluminum oxide, iron oxide, potassium oxide, titanium oxide, and iron oxide.

According to another embodiment of the present disclosure, the present disclosure provides a method for preparing the above-mentioned porous material. The preparation method of the porous material includes: mixing an industrial by-product, water, and an acid to obtain a gelatinous mixture, wherein in the gelatinous mixture, the molar ratio of hydrogen ions to the weight ratio of the industrial byproduct is about 25 mmol / g to 40 mmol / g; washing the gelatinous mixture with water until the pH value of the gelatinous mixture is 7; and performing a calcination process on the gelatinous mixture to obtain the porous material.

According to another embodiment of the present disclosure, the present disclosure also provides a catalyst composition. The catalyst composition includes a carrier and an active material. The support may be the above-mentioned porous material, and the active material is disposed on the support. The active material may be a metal or a compound containing the metal, wherein the metal may be iron, cobalt, nickel, copper, zinc, or a combination thereof.

Figure 1 is an X-ray diffraction (XRD) pattern of the blast furnace stone described in Example 1 and the porous material obtained in Example 1.

FIG. 2 is a scanning electron microscope (SEM) image of the blast furnace stone used in Example 1. FIG.

FIG. 3 is a scanning electron microscope (SEM) image of the porous material obtained in Example 1. FIG.

FIG. 4 is a scanning electron microscope (SEM) image of the catalyst composition (1) obtained in Example 2. FIG.

The disclosed embodiments provide a porous material and a catalyst composition including the same, and a method for preparing the porous material. The porous material described in this disclosure includes fumed silica and a metal oxide having a high specific surface area. The surface of the porous material can be further provided with a specific active material as a catalyst composition for the steam recombination catalyst of tar to improve the tar conversion rate. The porous material can use industrial by-products produced by the high-temperature process of the metal smelting industry as a source, and use an acid solution as a solvent to dissolve alkaline or neutral substances in the industrial by-products. In this way, the obtained porous material has a high specific surface area and a pore volume. Therefore, when the active material is dispersedly supported on the porous material, the obtained catalyst composition also has a high specific surface area and pore volume, which can improve the catalytic activity of the active material. In addition, the porous material contains fumed silica in order to increase the mechanical strength of the porous material, and also contains metal oxides, which can be used as a steam recombination catalyst component of tar.

According to an embodiment of the present disclosure, the present disclosure provides a porous material. The more The pore material may be composed of 98-99.5 parts by weight (for example, 98.5-99.5 parts by weight, or 98-99 parts by weight) of fumed silica and 0.5 to 2 parts by weight (for example, 0.5-1.5 parts by weight, or 1-2 parts by weight). Consisting of metal oxides. The metal oxide can be selected from the group consisting of magnesium oxide, aluminum oxide, iron oxide, potassium oxide, titanium oxide, and iron oxide. According to the disclosed embodiment, the total weight of the fumed silica and the metal oxide may be 100 parts by weight. According to some embodiments of the present disclosure, the porous material of the present disclosure may include 98-99.5 parts by weight of fumed silica and 0.5 to 2 parts by weight of a metal oxide. The metal oxide may include magnesium oxide, aluminum oxide, iron oxide, potassium oxide, titanium oxide, iron oxide, or a combination thereof.

According to the disclosed embodiment, the porous material described in the present disclosure contains 98% to 99.5% by weight of fumed silica (based on the total weight of the porous material). In other words, the main component of the porous material is fumed silica. Fumed silica (also known as fumed silica) is currently widely used in synthetic quartz glass powder or as a filler in the semiconductor industry. Generally, the method for forming fumed silica is produced by hydrolyzing a silicon halide (such as silicon chloride (SiCl ₄ )) in a hydrogen-oxygen flame environment (temperature is about 1800 ° C.). However, the above process requires a large amount of energy consumption and increases the manufacturing cost. It is also necessary to use a halogen-containing compound as a starting material, which is likely to cause environmental pollution. In addition, the specific surface area of the fumed silica formed by the above method has a certain limit (for example, it cannot be further increased to 650 m ² / g). The porous material with fumed silica as the main component in this disclosure is formed by the porous material preparation method described in this disclosure, so the specific surface area of the porous material can be greater than or equal to 650 m ² / g, for example from about 650m ² / g to ^{700m 2 / g, 660m 2 /} g to ^{700m 2 / g, 670m 2 /} g to 700m ² / g, or 650m ² / g to 690m ² / g.

According to embodiments of the present disclosure, the present disclosure of the pore volume of the porous material may be greater than or equal to 0.6cm ³ / g, for example 0.7cm ³ / g to 1.0cm ³ /g,0.6cm ³ / g to 0.9cm ³ / g, or 0.7 cm ³ / g to 0.9 cm ³ / g.

According to the disclosed embodiment, the average pore size of the porous material described in the present disclosure may be greater than about 2 nm, for example, about 2 nm to 10 nm, 3 nm to 10 nm, or 2 nm to 9 nm.

According to the disclosed embodiment, the metal oxide of the porous material may include titanium oxide, and the weight ratio of the titanium oxide to the metal oxide may be about 0.4 to 1.0 (for example, about 0.4 to 0.7, or 0.5 to 1.0). In addition, according to the disclosed embodiments, the metal oxide of the porous material may include magnesium oxide, and the weight ratio of the magnesium oxide to the metal oxide may be about 0.1 to 0.25 (for example, about 0.1 to 0.2, or 0.15 to 0.25) ). In this way, when the porous material is used as a carrier of the catalyst composition, the reactivity of tar recombination can be improved.

According to the embodiments of the disclosure, the disclosure provides a method for preparing an upper porous material without using an oxygen flame and avoiding the use of halogen-containing compounds as raw materials. In addition, as described above, the porous material (the main component is fumed silica) obtained by using the method for preparing a porous material described in this disclosure may have a high specific surface area. The method for preparing the porous material includes the following steps. First, an industrial by-product, water, and an acid are mixed to obtain a gelatinous mixture in which the gelatinous mixture is. The gelatinous mixture was then washed with water until the pH of the gelatinous mixture reached about 7. And, a calcining process is performed on the colloidal mixture to obtain the porous material disclosed in the present disclosure. According to the disclosed embodiment, the acid can be dissolved in water to form an acidic solution, and then the industrial by-products and the The acidic solution was mixed to obtain the gelatinous mixture. In the acidic solution, the concentration of the acid may be about 5 wt% to 25 wt% (for example, 7 wt% to 24 wt%, 8 wt% to 23 wt%, 9 wt% to 22 wt%, or 10 wt% to 20 wt%). The total weight of the solution is the basis. According to the disclosed embodiment, in the colloidal mixture, the molar ratio of hydrogen ions to industrial by-products may be about 25mmol / g to 40mmol / g (for example, 27.5mmol / g to 30mmol / g, or 27mmol / g to 40mmol / g) to ensure that the acidic solution can dissolve alkaline or neutral substances in industrial by-products, retain the fumed silica framework, and obtain a porous material with a high specific surface area and pore volume as a catalyst carrier. .

According to the disclosed embodiment, the process temperature of the calcination process may be about 500 ° C to 700 ° C, such as 550 ° C to 700 ° C, or 500 ° C to 670 ° C. In addition, the processing time of the calcination process may be 2 to 12 hours, such as 2 to 10 hours, or 2 to 8 hours.

According to the embodiment of the disclosure, in the method for preparing the porous material described in the disclosure, the acid used may be hydrochloric acid, nitric acid, phosphoric acid, formic acid, or acetic acid.

According to embodiments of the disclosure, the industrial by-products may be steel slags, such as blast-furnace slag, converter-basic-oxygen-furnace slag, or electric arc furnace steel-making electric furnace stone ( electric-arc-furnace slag). In addition, the industrial by-product is composed of about 15-50 parts by weight (for example, 20-50 parts by weight, or 15-45 parts by weight) of fumed silica and about 50 to 85 parts by weight (for example, 50-80 parts by weight, Or 55-85 parts by weight). The metal compound may include magnesium oxide, aluminum oxide, iron oxide, potassium oxide, calcium oxide, titanium oxide, iron oxide, sodium oxide, manganese oxide, phosphorus oxide, or a combination thereof. In addition, according to the embodiment of the disclosure, the metal compound may be freely selected from magnesium oxide, aluminum oxide, iron oxide, potassium oxide, calcium oxide, titanium oxide, and oxygen. A group of iron oxides, sodium oxide, manganese oxide, and phosphorus oxide.

According to an embodiment of the disclosure, the disclosure provides a catalyst composition. The catalyst composition includes a carrier and an active material. The active substance can be disposed on the carrier. The carrier may be the porous material of the present disclosure. The active material may be a metal or a compound containing the metal, wherein the metal is iron, cobalt, nickel, copper, zinc, or a combination thereof. For example, the active material may be iron oxide, cobalt oxide, nickel oxide, copper oxide, or zinc oxide.

According to the disclosed embodiment, the weight percentage of the active material may be 1 wt% to 30 wt% (for example, 1 wt% to 25 wt%, 3 wt% to 30 wt%, 5 wt% to 25 wt%, or 5 wt% to 22 wt%), using the carrier And the total weight of the active substance is used as a reference. According to the disclosed embodiment, after the active material is configured, the specific surface area of the carrier may be 540 m ² / g to 640 m ² / g (for example, 540 m ² / g to 630 m ² / g), and the pore volume may be 0.45 cm ³ / g to 0.65 cm ³ / g (for example, 0.45 cm ³ / g to 0.60 cm ³ / g) to ensure that the catalyst composition has a tar conversion rate (eg, naphthalene conversion rate) of 80% or more.

According to the disclosed embodiment, the method for preparing the catalyst composition may include the following steps. A metal salt precursor solution is provided. For example, the metal salt precursor solution can be prepared by dissolving a metal salt (such as an iron salt, a cobalt salt, a nickel salt, a copper salt, or a zinc salt) in water. The concentration of the metal salt may be about 1 wt% to 30 wt%. Next, the porous material is impregnated into the metal salt precursor solution, and the liquid level is higher than that of the porous material. The impregnation time may be 5 minutes to 1 hour. Next, the porous material is taken out from the metal salt precursor solution, and is placed in a high-temperature furnace for a calcination process. The temperature of the calcining process may be about 400 ° C. to 600 ° C., and the time may be 5 to 24 hours. Down to After room temperature, the catalyst composition of the present disclosure is obtained. Through the above process, the metal active material can be dispersed on the surface of the carrier, and the amount of metal added can be reduced. In this way, the tar conversion rate can be improved at a lower active material load.

According to an embodiment of the present disclosure, the present disclosure provides a method for removing tar. The method includes placing the catalyst composition described in the present disclosure in a reactor, and introducing a gas generated by gasification of biomass (for example, rice straw, wood chips, rice husk, or coal) into the reactor, so that The tar in the gas is converted into a high calorific value gas (such as hydrogen, methane, or carbon monoxide). The temperature of the reactor may be about 450 ° C to 1000 ° C, and the pressure may be about 1 atm to 5 atm. In addition, the gas generated by the gasification of biomass is introduced into the reactor, the space velocity (a GHSV) may 500h ^-1 to about 30,000h ^-1. According to the disclosed embodiment, the method for removing tar described in the present disclosure may have a tar conversion rate greater than or equal to 80%. In addition, the tar removal method described in this disclosure can reduce the tar content of the gas generated by the gasification of biomass to below 100 mg / Nm ³ .

In order to make the above and other objects, features, and advantages of this disclosure more comprehensible, a few examples are given below for detailed description as follows:

Preparation of porous materials:

Example 1:

First, 100 grams of blast furnace slag (BFS) powder, manufactured by Zoomlion Furnace Company, has the composition shown in Table 1 (specific surface area is 0.97 m2 / g, and the pore volume is about 0) and 750 grams of hydrochloric acid An aqueous solution (at a concentration of 14 wt%) was mixed. After being stirred uniformly at room temperature for 2 hours, a gel-like substance was obtained, in which the molar ratio of the molar number of hydrogen ions to the blast furnace stone powder was about 28.52 mmol / g. Will be above The gel-like substance was washed with water and filtered. During the filtration process, the filter cake was washed with water until the pH value of the filtrate reached about 7. Next, the obtained filter cake is dried in a high-temperature furnace, and the drying temperature is about 105 ° C. Then, the filter cake is subjected to a calcination process using the high-temperature furnace, wherein the temperature of the calcination process is about 600 ° C. and the time lasts about 4 hours. After falling to room temperature, a porous material was obtained. An X-ray fluorescence spectrometer (XRF) was used to analyze the composition of the porous material, and a specific surface area and porosimetry analyzer were used to measure the specific surface area and porosity of the porous material. The results of the volume and average pore size are shown in Table 1.

It can be known from Table 1 that the blast furnace stone with a low specific surface area and no pores can obtain a high specific surface area and a high pore volume after the treatment described in Example 1, and the porous material contains about 1.27 wt% of metal oxides Consists of magnesium oxide, iron oxide, potassium oxide, calcium oxide, and titanium oxide).

Please refer to FIG. 1, which are X-ray diffraction patterns of the blast furnace stone described in Example 1 and the porous material obtained in Example 1. It can be seen from Fig. 1 that montmorillonite (CaMgSiO ₄ ) and yellow feldspar (melilite, (Ca, Na) ₂ (Al, Mg, Fe ²⁺ )) appear at 2θ = 29.3, 30.4, and 31.3 degrees. (Al, Si) SiO ₇ ]) and mineral characteristics peaks such as merwinite, Ca ₃ Mg (SiO4) ₂ ). The porous material obtained in Example 1 is free of mineral characteristic spikes such as forsterite, yellow feldspar, and rose pyroxene. In addition, the X-ray diffraction pattern of the porous material obtained in Example 1 showed a characteristic peak (2θ = 17.2 to 32.6 degrees) of fumed silica. It can be seen that, through the process described in Example 1, the blast furnace stone has been recombined to form an amorphous phase substance.

FIG. 2 is a scanning electron microscope (SEM) image of the blast furnace stone used in Example 1, and FIG. 3 is a scanning electron microscope image of the porous material obtained in Example 1. FIG. As can be seen from FIG. 2 and FIG. 3, through the process described in Example 1, the originally dense, smooth and non-porous blast furnace stone can be converted into a porous material with surface defects.

Preparation of catalyst composition for steam recombination

Example 2:

First, 2 g of nickel nitrate (Ni (NO ₃ ) ₂ ‧ 6H ₂ O) was mixed with 8 g of water to obtain a nickel salt precursor solution. Next, the porous material obtained in Example 1 is impregnated into the nickel salt precursor solution so that the liquid level is higher than the porous material. Next, after 5 minutes, the porous material is taken out and placed in a high-temperature furnace for a calcination process, wherein the temperature of the calcination process is about 500 ° C. and the time lasts about 14 hours. After the temperature was lowered to room temperature, a catalyst composition (1) was obtained.

An X-ray fluorescence spectrometer (XRF) was used to analyze the composition of the catalyst composition (1), and the catalyst was measured using a specific surface area and porosimetry analyzer The specific surface area and pore volume of the composition (1) are shown in Table 2. FIG. 4 is a scanning electron microscope (SEM) image of the catalyst composition (1) obtained in Example 2. As can be seen from Figs. 3 and 4, after the nickel oxide is supported on the porous material, nickel oxide crystalline particles with smooth crystal grain surfaces can be observed on the surface of the porous material, and the grain size is about 50-500 nm.

Example 3:

The method was performed as described in Example 2, except that the amount of nickel nitrate (Ni (NO ₃ ) ₂ ‧ 6H ₂ O) was increased from 2 g to 6 g to obtain a catalyst composition (2). An X-ray fluorescence spectrometer (XRF) was used to analyze the composition of the catalyst composition (2), and the catalyst was measured using a specific surface area and porosimetry analyzer The specific surface area and pore volume of the composition (2) are shown in Table 2.

Example 4:

The method was performed as described in Example 2, except that the amount of nickel nitrate (Ni (NO ₃ ) ₂ ‧ 6H ₂ O) was increased from 2 g to 8 g to obtain a catalyst composition (3). An X-ray fluorescence spectrometer (XRF) was used to analyze the composition of the catalyst composition (3), and the catalyst was measured using a specific surface area and porosimetry analyzer The specific surface area and pore volume of the composition (3) are shown in Table 2.

As can be seen from Table 2, even if the amount of nickel oxide is increased to about 20% by weight, the specific surface area of the catalyst composition described in this disclosure may still be greater than 540 m ² / g, and the pore volume may still be greater than 0.48 cm ³ / g.

X-ray diffraction (X-ray diffraction) spectrum analysis was performed on the catalyst compositions (1)-(3) obtained in Examples 2-4, and it can be seen that gas phase dioxide appears at 2θ = 17.2 to 32.6 degrees. The amorphous phase of fumed silica bulges, and characteristic spikes of nickel oxide (NiO) appear at 2θ = 37.1, 43.3, and 62.9, and the characteristic spike strength increases with increasing nickel oxide content. Nickel oxide is supported on the surface of the porous material.

Tar recombination experiment

Example 5:

Generally, tar contains benzene, toluene, anthracene, osmium, and naphthalene. Because naphthalene has the lowest reactivity, this disclosure uses naphthalene as a simulant for tar recombination reaction, and tests the tar removal efficiency of the catalyst using a fixed bed reactor. The test steps are as follows: Provide a tar steam recombination reaction device. The tar steam reforming reaction equipment includes a catalyst bed and a steam reforming reactor. The catalyst sample was placed in a catalyst bed and the steam reactor was sealed. Next, a reaction atmosphere containing naphthalene vapor, water vapor, and nitrogen (where the water / carbon ratio (S / C) is 2, the gas hourly space velocity (GHSV) is 5,000h ^-1 , and the N ₂ flow rate is 100 mL / min). Next, the reaction atmosphere was introduced into a steam reforming reactor, and the naphthalene content measured at the inlet of the gas was 4 g / Nm ³ . Next, the reaction gas was brought into contact with the catalyst sample at 550 ° C (the temperature of tar catalytic recombination) to react. After the reaction for one hour, the gas after the reaction was discharged from the steam reforming reactor, and the naphthalene content of the gas after the reaction was measured.

Here, the blast furnace stone described in Example 1, the porous material obtained in Example 1, and quartz sand (purchased from Showa Chemical Co., Ltd., the purity of silicon dioxide is greater than 99% by weight, and the specific surface area is about 2.5 m ² / g. ) As a catalyst sample, the tar removal efficiency test was performed by the above steps, and the results are shown in Table 3.

This disclosure uses naphthalene as a tar simulant to test the efficiency of tar steam reforming of catalyst samples. The calculation method of tar conversion rate is as follows:

As can be seen from Table 3, the tar conversion rates of the blast furnace stone, quartz sand, and the porous material obtained in Example 1 were 29.3%, 42.5%, and 61.3%, respectively. The tar conversion rate of the porous material obtained in Example 1 was more than twice the blast furnace stone (starting material). The silicon oxide content of the porous material obtained in Example 1 and quartz sand is as high as 98% or more, but the tar conversion rate of the porous material obtained in Example 1 is higher than that of quartz sand. This is due to the specific surface area of the porous material obtained in Example 1. The pore volume is higher than that of quartz sand, and the porous material contains about 1.27 wt% of metal oxides (composed of magnesium oxide, iron oxide, potassium oxide, calcium oxide, and titanium oxide).

Next, the catalyst compositions (1)-(3) described in Examples 2-4 were used as catalyst samples, and the tar removal efficiency test was performed in the above steps. The results are shown in Table 4.

As can be seen from Table 4, when the content of nickel oxide (active material) supported on the porous material (support) is increased from 0% to 5.2%, the tar conversion rate is significantly improved.

Next, using the catalyst composition (1) described in Example 2 as a catalyst sample, the tar removal efficiency test was performed in the above steps, except that the tar catalytic recombination temperature was increased from 550 ° C to 650 ° C, 850 ° C, 950 ° C. The results are shown in Table 5.

It can be known from Table 5 that when the temperature of tar catalytic recombination is higher than 650 ° C, the tar conversion rate can reach more than 90%. In addition, when the temperature was increased to 850 ° C, the tar conversion was close to 98%.

Although the present disclosure has been disclosed above in several embodiments, it is not intended to limit the present disclosure. Any person with ordinary knowledge in the technical field can make any changes and modifications without departing from the spirit and scope of the present disclosure. Therefore, the scope of protection of this disclosure shall be determined by the scope of the appended patent application.

Claims (15)

A porous material, by the Department of 98-99.5 parts by weight of fumed silicon dioxide and 0.5 to 2 parts by weight of a metal oxide composition, wherein the ratio of the surface area of the porous materials based 650m ² / g to 700m ² / g, and the The metal oxide is selected from the group consisting of magnesium oxide, aluminum oxide, potassium oxide, titanium oxide, and iron oxide. The porous material according to item 1 of the application, wherein the total weight of the fumed silica and the metal oxide is 100 parts by weight. The porous material according to item 1 of the scope of patent application, wherein the pore volume of the porous material is 0.6 cm ³ / g to 1.0 cm ³ / g. The porous material according to item 1 of the scope of patent application, wherein the average pore size of the porous material is 2 nm to 10 nm. A method for preparing a porous material, comprising: mixing an industrial byproduct, water, and an acid to obtain a gelatinous mixture, wherein in the gelatinous mixture, the molar ratio of hydrogen ions to the weight ratio of the industrial byproduct 25 mmol / g to 40 mmol / g; washing the gelatinous mixture with water until the pH value of the gelatinous mixture is 7; and performing a calcination process on the gelatinous mixture to obtain the porous material described in item 1 of the scope of patent application . The method for preparing a porous material according to item 5 of the scope of the patent application, wherein the industrial by-product is steel slags. The method for preparing a porous material according to item 5 of the scope of patent application, wherein the industrial by-product is blast-furnace slag, converter-stone (basic-oxygen-furnace slag), or electric arc furnace steelmaking electric furnace stone electric-arc-furnace slag). The method for preparing a porous material according to item 5 of the application, wherein the industrial by-product is composed of 15-50 parts by weight of fumed silica and 50 to 85 parts by weight of a metal compound, wherein the metal compound It includes magnesium oxide, aluminum oxide, iron oxide, potassium oxide, calcium oxide, titanium oxide, iron oxide, sodium oxide, manganese oxide, phosphorus oxide, or a combination thereof. The method for preparing a porous material according to item 5 of the scope of the patent application, wherein the process temperature of the calcination process is 500 to 700 ° C. The method for preparing a porous material according to item 5 of the scope of the patent application, wherein the process time of the calcination process is 2 to 12 hours. The method for preparing a porous material according to item 5 of the application, wherein the acid is hydrochloric acid, nitric acid, phosphoric acid, formic acid or acetic acid. A catalyst composition comprises: a carrier, the carrier being the porous material described in item 1 of the scope of patent application; and an active substance disposed on the carrier, wherein the active substance is a metal or a compound containing the metal, The metal is iron, cobalt, nickel, copper, zinc, or a combination thereof. The catalyst composition according to item 12 of the scope of the patent application, wherein the weight percentage of the active substance is 1% to 30% by weight, based on the total weight of the carrier and the active substance. The catalyst composition according to item 12 of the application, wherein the carrier has a specific surface area of 540 m ² / g to 640 m ² / g after the active material is disposed. The application of the catalyst of item 12 patentable scope of the composition, wherein the carrier is disposed after the active material has a pore volume was 0.45cm ³ / g to 0.65cm ³ / g.