Ag (I)-based silicon dioxide adsorbent as well as preparation method, regeneration method and application thereof

Abstract

The invention relates to an Ag (I)-based silicon dioxide adsorbent as well as a preparation method, a regeneration method and application thereof, and relates to the field of adsorbents. The preparation method of the Ag (I)-based silicon dioxide adsorbent comprises the following steps: adding a silicon dioxide carrier into a silver nitrate solution, stirring, filtering, washing, and carrying out vacuum drying to obtain the Ag (I)-based silicon dioxide adsorbent, wherein the mass volume ratio of the silicon dioxide carrier to the silver nitrate solution is 1g: (15-40) mL; the concentration of the silver nitrate solution is 0.05-0.5 mol / L. Adsorption active sites of the Ag (I)-based silicon dioxide adsorbent prepared through the convenient and efficient method are greatly increased, and the Ag (I)-based silicon dioxide adsorbent has good adsorption performance. Besides, the Ag (I)-based silicon dioxide adsorbent saturated in adsorption is placed in a proper microwave environment for regeneration, energy consumption is low, effective regeneration of the adsorbent can be conveniently and efficiently achieved, resource waste of the adsorbent is avoided, and secondary pollution is reduced.

Description

Technical Field

[0001] The invention belongs to the field of adsorbents, and more specifically relates to an Ag(I)-based silica adsorbent, a preparation method and a regeneration method thereof, and an application thereof. Background Art

[0002] At present, oil is still an important part of my country's energy structure. Gasoline and diesel are important products of oil refining and are in huge demand. Crude oil contains sulfides such as thiophene (TP), benzothiophene (BT), dibenzothiophene (DBT), etc., which cannot be completely removed in the traditional fuel refining process. As a result, large-scale consumption of fuel will release a large amount of SOx, which seriously pollutes the atmospheric environment, endangers human health, and damages industrial catalysts, causing the deactivation of catalysts in automobile exhaust devices. Therefore, it is necessary to start deep desulfurization of fuel from the time of fuel refining, so as to curb the generation of SOx pollutants at the source.

[0003] As countries and regions adopt increasingly stringent fuel sulfur content standards, refining and chemical companies and scientific research fields attach great importance to the development of new and efficient fuel deep desulfurization technologies. Among them, adsorption desulfurization (ADS) is expected to become the most promising desulfurization technology due to its low cost, relatively mild operating conditions, and high desulfurization efficiency. Currently, the reported desulfurization adsorbents include activated carbon, molecular sieves, metal organic framework materials, and silica.

[0004] In practical applications, waste adsorbents saturated with pollutants are often discarded or landfilled when they reach their maximum adsorption capacity, which may cause secondary pollution. Therefore, it is necessary to find effective treatment technologies to regenerate waste adsorbents and reduce secondary pollution. Traditional regeneration methods include thermal regeneration, chemical regeneration, and biological regeneration, but they have disadvantages such as time-consuming, low regeneration efficiency, and high energy consumption in application, which do not meet environmental protection and energy-saving requirements. Microwave regeneration can accelerate the reaction between adsorbents and adsorbates, and speed up the desorption and degradation of adsorbates. It is a very safe and harmless regeneration technology.

[0005] Silica materials have attracted widespread attention due to their advantages such as adjustable pore size, high specific surface area, good thermal stability and easy functionalization. Traditional silica materials only bind to sulfides through van der Waals forces, which limits the adsorption capacity and selectivity of the adsorbent. Therefore, how to introduce Ag(Ⅰ) into the silica carrier through modification to increase the adsorption active sites and improve the adsorption capacity so that the prepared adsorbent has good application prospects in the field of adsorption desulfurization has become an urgent problem to be solved. Summary of the invention

[0006] In view of the above-mentioned defects and problems of the prior art, the present invention develops an Ag(I)-based silica adsorbent, a preparation method and a regeneration method thereof, and an application thereof.

[0007] The first aspect of the present invention provides a method for preparing an Ag(I)-based silica adsorbent, comprising the following steps:

[0008] Adding a silica carrier to a silver nitrate solution, stirring, filtering, washing, and vacuum drying to obtain the Ag(Ⅰ)-based silica adsorbent; wherein,

[0009] The mass volume ratio of the silica carrier to the silver nitrate solution is 1 g: (15-40) mL; the concentration of the silver nitrate solution is 0.05-0.5 mol / L.

[0010] Optionally, the mass volume ratio of the silica carrier to the silver nitrate solution is 1 g: (20-30) mL; the concentration of the silver nitrate solution is 0.1-0.3 mol / L.

[0011] Optionally, stirring is performed at a temperature of 20 to 50° C. for 2 to 5.5 hours; preferably, the vacuum drying temperature is 80 to 120° C., and the vacuum drying time is 8 to 16 hours.

[0012] Optionally, the silica carrier includes one or more of ultra-microporous silica SMS, KIT-6, SBA-15 and MCM-41.

[0013] Another aspect of the present invention provides an Ag(I)-based silica adsorbent prepared by any of the above-mentioned preparation methods.

[0014] Optionally, the pore volume of the adsorbent is 0.37 to 0.48 cm 3 / g, specific surface area is 656~864m 2 / g.

[0015] The third aspect of the present invention further provides the Ag(I)-based silica adsorbent described in the second aspect for use in adsorbing and / or removing sulfides in oil products.

[0016] Optionally, the use of the Ag(I)-based silica adsorbent comprises the following steps:

[0017] The sulfide-containing oil product is set to a flow state with a flow rate of 0.01 to 0.05 mL / min;

[0018] Allowing the adsorbent to contact the fluidized oil product at a temperature of 30 to 50° C.;

[0019] The oil product in the fluid state is in contact with the adsorbent to obtain the Ag(Ⅰ)-based silica adsorbent after application;

[0020] Wherein, the sulfide includes one or more of thiophene, benzothiophene and dibenzothiophene.

[0021] Optionally, the oil product includes simulated oil or crude fuel oil. Preferably, when the oil product is simulated oil, the concentration of the sulfide is 100-500 ppm.

[0022] The fourth aspect of the present invention further provides a method for regenerating the Ag(I)-based silica adsorbent described in the second aspect, comprising the following steps:

[0023] placing the saturated Ag(I)-based silica adsorbent in a microwave environment, adjusting the power and time of the microwave reactor to obtain a regenerated Ag(I)-based silica adsorbent;

[0024] Preferably, the adsorption-saturated Ag(I)-based silica adsorbent is an Ag(I)-based silica adsorbent obtained by being used in the process of adsorbing and / or removing sulfides in oil products; more preferably, the microwave power in the microwave environment is 210 to 700 W, and the adsorption-saturated Ag(I)-based silica adsorbent is placed in the microwave environment for 3 to 15 min.

[0025] In summary, this application has the following beneficial effects:

[0026] 1. The present invention modifies the silica carrier by directly mixing the silica carrier with an appropriate amount of silver nitrate solution, which has low cost and simple preparation process; the loading of transition metal Ag ions increases the adsorption active sites of the original adsorbent, thereby improving the adsorption performance of the original adsorption material.

[0027] 2. The Ag(I)-based silica adsorbent prepared by the present invention has high adsorption efficiency and large adsorption capacity, can be used to adsorb sulfides in oil products, and has good application prospects.

[0028] 3. The present invention provides a microwave regeneration method for Ag(I)-based silica adsorbent, which can conveniently and efficiently realize the effective regeneration of Ag(I)-based silica adsorbent, with low energy consumption and short heating time, and avoids waste of adsorbent resources and reduces secondary pollution. For adsorbent materials that have reached adsorption saturation, a regeneration method with high regeneration efficiency is provided. DETAILED DESCRIPTION

[0029] The present application is further described in detail with reference to the following examples. It should be noted that if no specific conditions are specified in the following examples, the conventional conditions or the conditions recommended by the manufacturer are followed, and the raw materials used in the following examples can be obtained from common commercial sources unless otherwise specified.

[0030] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0031] In this application, "first aspect", "second aspect", "third aspect", etc. are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or quantity, nor can they be understood as implicitly indicating the importance or quantity of the indicated technical features. Moreover, "first", "second", "third", etc. only serve the purpose of non-exhaustive enumeration and description, and it should be understood that they do not constitute a closed limitation on quantity.

[0032] In this application, "optionally", "optional", and "optional" mean optional or dispensable, that is, any one of the two parallel schemes of "yes" or "no". If multiple "options" appear in a technical solution, unless otherwise specified and there is no contradiction or mutual restriction, each "optional" is independent.

[0033] In this application, when it comes to numerical ranges, unless otherwise specified, the above numerical ranges are deemed to be continuous and include the minimum and maximum values ​​of the range, as well as each value between such minimum and maximum values. Further, when a range refers to an integer, each integer between the minimum and maximum values ​​of the range is included. In addition, when multiple ranges are provided to describe features or characteristics, the ranges can be merged. In other words, unless otherwise specified, all ranges disclosed herein should be understood to include any and all subranges included therein.

[0034] In the present application, the technical features described in an open manner include closed technical solutions composed of the listed features, and also include open technical solutions containing the listed features.

[0035] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those generally understood by those skilled in the art to which this application belongs. The terms used in this application and in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in this application includes any and all combinations of one or more related listed items. The term "multiple" in this application means at least two, such as two, three, etc., unless otherwise clearly and specifically limited.

[0036] In order to facilitate the description of the technical solution of the present application, the following description is made before starting the experiment of the present application:

[0037] (1) A method for preparing an Ag(I)-based silica adsorbent, comprising the following steps:

[0038] Add a silica carrier to a silver nitrate solution, stir, filter, wash, and vacuum dry to obtain an Ag(I)-based silica adsorbent; wherein the mass volume ratio of the silica carrier to the silver nitrate solution is 1 g:(15-40) mL; and the concentration of the silver nitrate solution is 0.05-0.5 mol / L. Preferably, the mass volume ratio of the silica carrier to the silver nitrate solution is 1 g:(20-30) mL; and the concentration of the silver nitrate solution is 0.1-0.3 mol / L.

[0039] It should be noted that in the above steps, the silica carrier can be selected from one or more of ultra-microporous silica SMS, KIT-6, SBA-15 and MCM-41, and the average pore size of the ultra-microporous silica carrier is 0.5 to 2 nanometers. The above silica carrier can be commercially available or prepared by itself, which will not be described here. As an example, the ultra-microporous silica material SMS used in the following examples and comparative examples can be prepared by referring to the preparation steps of Example 2 in the patent publication CN112940238A.

[0040] In the above steps, stirring is performed at a temperature of 20 to 50° C. and a stirring speed of 300 r / min for 2 to 5.5 hours; filtering is performed by suction filtration, and the filter cake is washed three times with deionized water, and the washed filter cake is placed in a vacuum drying oven for vacuum drying, the vacuum drying temperature is 80 to 120° C., and the vacuum drying time is 8 to 16 hours.

[0041] (2) The pore volume of the Ag(I)-based silica adsorbent prepared by the above preparation method is 0.37 to 0.48 cm 3 / g, specific surface area is 656~864m 2 / g.

[0042] (3) The Ag(I)-based silica adsorbent prepared by the above preparation method can be used to adsorb and / or remove sulfides in oil products, specifically, comprising the following steps:

[0043] The sulfide-containing oil product is set to a flow state with a flow rate of 0.01 to 0.05 mL / min;

[0044] Allow the adsorbent to contact the flowing oil at a temperature of 30 to 50°C;

[0045] After the fluidized oil product is in contact with the adsorbent, the Ag(I)-based silica adsorbent after application is obtained;

[0046] The sulfide includes one or more of thiophene, benzothiophene and dibenzothiophene.

[0047] It should be noted that the oil product includes simulated oil or fuel crude oil. Preferably, when the oil product is simulated oil, the concentration of sulfide is 100-500 ppm. When the oil product is simulated oil, the simulated oil can be prepared by the following method:

[0048] Thiophene, benzothiophene or dibenzothiophene is dissolved in n-octane and diluted to prepare simulated gasoline with a sulfur content of 500 ppm.

[0049] (4) A method for regenerating an Ag(I)-based silica adsorbent, comprising the following steps:

[0050] The saturated Ag(I)-based silica adsorbent is placed in a microwave environment, and the power and time of the microwave reactor are adjusted to obtain the regenerated Ag(I)-based silica adsorbent.

[0051] In the above regeneration step, the microwave power in the microwave environment is 210 to 700 W, and the time for which the adsorption-saturated Ag(I)-based silica adsorbent is placed in the microwave environment is 3 to 15 minutes. It can be understood that the adsorption-saturated Ag(I)-based silica adsorbent is the applied Ag(I)-based silica adsorbent obtained in the process of adsorbing and / or removing sulfides in oil products. During the regeneration process, the adsorption-saturated Ag(I)-based silica adsorbent may fully utilize the microwave energy under microwave irradiation, and the high temperature on the surface of the adsorbent can achieve desorption or degradation of the adsorbate, thereby achieving regeneration.

[0052] Example

[0053] Example 1

[0054] 0.6795 g of silver nitrate was dissolved in 40 mL of deionized water to form a 0.1 mol / L silver nitrate solution; 2 g of ultra-microporous silica SMS carrier was added to the obtained solution, and the mixture was stirred at 25° C. at a stirring speed of 300 r / min for 3 h. The above mixture was filtered, washed, and vacuum dried at 100° C. for 12 h. The filter cake was then pressed into tablets at 10 MPa and ground into 40 mesh particles to obtain an Ag(I)-based silica adsorbent.

[0055] The prepared Ag(I)-based silica adsorbent was loaded into a quartz tube, and the performance was tested using a homemade fixed bed reactor, and the sulfur content was determined using a gas chromatograph. The specific operation is as follows: In a fixed bed reactor, the bottom layer is filled with an appropriate amount of absorbent cotton, and then 0.8 mL Ag(I)-based silica adsorbent and an appropriate amount of quartz sand are loaded. Before the adsorption experiment begins, the loaded adsorbent is fully moistened with n-heptane, and then simulated oil is introduced. The simulated oil after adsorption is collected at the lower outlet of the reactor and analyzed by gas chromatography (the thiophene content in the simulated oil after adsorption is obtained by the standard curve method). Among them, the thiophene content in the simulated oil is 500 ppm, the flow rate of the simulated oil is 0.04 mL / min, the adsorption temperature is 30°C, and the adsorption pressure is 1 bar.

[0056] The saturated Ag(I)-based silica adsorption column was placed in a microwave reactor, the microwave power of the microwave reactor was adjusted to 210 W, and the irradiation time was 3 min to obtain the Ag(I)-based silica regenerated adsorbent and repeat the above adsorption operation.

[0057] Example 2-3

[0058] The difference from Example 1 is that the mass volume ratio of the silica carrier to the silver nitrate solution is different. The mass volume ratio of the silica carrier to the silver nitrate solution in Example 2-3 is shown in Table 1.

[0059] Embodiment 4-6

[0060] The difference from Example 2 is that the concentration of the silver nitrate solution is different. The concentrations of the silver ion solutions in Examples 4-6 are shown in Table 1. Specifically, in Example 4, 1.6988 g of silver nitrate was dissolved in 50 mL of deionized water to form a 0.2 mol / L silver nitrate solution; in Example 5, 2.1235 g of silver nitrate was dissolved in 50 mL of deionized water to form a 0.25 mol / L silver nitrate solution; in Example 6, 2.5482 g of silver nitrate was dissolved in 50 mL of deionized water to form a 0.3 mol / L silver nitrate solution.

[0061] Embodiment 7-9

[0062] The difference from Example 5 is that only the microwave power is changed. The microwave powers in Examples 7-9 are shown in Table 1.

[0063] Examples 10-13

[0064] The difference from Example 9 is that only the microwave time is changed. The microwave time in Examples 10-13 is shown in Table 1.

[0065] Examples 14-16

[0066] The difference from Example 12 is that the silica carrier type is different. The silica carrier types in Examples 14-16 are shown in Table 1.

[0067] Examples 17-18

[0068] The difference from Example 12 is that the type of sulfide in the simulated oil is different. In Examples 17-18, the type of sulfide in the simulated oil is shown in Table 1.

[0069] Comparative Example

[0070] Comparative Example 1

[0071] The difference from Example 12 is that the silver nitrate solution is replaced by a silver acetate solution of equal concentration.

[0072] Comparative Example 2

[0073] The difference from Example 12 is that the mass volume ratio of the silica carrier to the silver nitrate solution is 2 g:20 mL.

[0074] Comparative Example 3

[0075] The difference from Example 12 is that the mass volume ratio of the silica carrier to the silver nitrate solution is 2g:90mL.

[0076] Comparative Example 4

[0077] The difference from Example 12 is that the adsorption saturated Ag(I)-based silica adsorption column is no longer placed in a microwave reactor, but a chemical regeneration method is used to perform an adsorbent regeneration experiment. Specifically, the adsorption saturated Ag(I)-based silica adsorption column is placed in a constant temperature water bath at 80°C, and anhydrous ethanol is allowed to flush the adsorption column at a flow rate of 1 mL / min for 1 h, and then flushed at a flow rate of 0.2 mL / min until the effluent concentration is 0 ppm, to obtain an Ag(I)-based silica regenerated adsorbent and repeat the adsorption operation.

[0078] Comparative Example 5

[0079] The difference from Comparative Example 4 is that during the adsorbent regeneration experiment using the chemical regeneration method, anhydrous ethanol is replaced with an equal volume of benzene.

[0080] Comparative Example 6

[0081] The difference from Example 12 is that the adsorption saturated Ag(I)-based silica adsorption column is no longer placed in a microwave reactor, but the adsorbent regeneration experiment is carried out by a chemical regeneration method. Specifically, the adsorption saturated Ag(I)-based silica adsorbent is taken out from the adsorption column, soaked in 30 mL of anhydrous ethanol overnight, and then centrifuged until the sulfur content of the supernatant is 0 ppm to obtain the Ag(I)-based silica regenerated adsorbent and repeat the adsorption operation.

[0082] Comparative Example 7

[0083] The difference from Example 12 is that the adsorption saturated Ag(I)-based silica adsorption column is no longer placed in a microwave reactor, but the adsorbent regeneration experiment is carried out by a chemical regeneration method. Specifically, the adsorption saturated Ag(I)-based silica adsorption column is placed in a tube furnace under a nitrogen atmosphere and heated at 300° C. for 12 h to obtain an Ag(I)-based silica regenerated adsorbent and repeat the adsorption operation.

[0084] Comparative Example 8

[0085] The difference from Example 12 is that the adsorption saturated Ag(I)-based silica adsorption column is no longer placed in a microwave reactor, but the adsorbent regeneration experiment is carried out by a chemical regeneration method. Specifically, the adsorption saturated Ag(I)-based silica adsorption column is placed in a tube furnace under air atmosphere and heated at 300° C. for 12 h to obtain an Ag(I)-based silica regenerated adsorbent and repeat the adsorption operation.

[0086] Performance testing

[0087] Experimental Example 1 Specific surface area and pore volume determination

[0088] The BET characterization data of the Ag(I)-based silica adsorption prepared in the embodiment was obtained by using an adsorption instrument of model ASAP 2460 of Micromeritics Instrument Company of the United States. The specific operation is as follows: the sample to be tested is placed in a sample tube, degassed at 110° C. for 12 hours, and then the degassed sample is transferred to the analysis port, and liquid nitrogen is added to the analysis port Dewar flask for sample analysis. The total pressure of the nitrogen and helium gas cylinders is greater than 3 MPa, and the partial pressure is set to 0.14 MPa.

[0089] The pore volume is estimated by the condensed value of the N2 adsorption capacity at relative pressure (P / P0) = 0.99, and the specific surface area is the area occupied by each mL monolayer of N2 divided by V m The product of V m It is calculated based on the Brunauer-Emmett-Teller (BET) model formula (Formula (1)) in the range of P / P0=0.05-0.30.

[0090]

[0091] Where: P refers to the absolute pressure of N2 (mmHg); P0 refers to the saturated pressure of N2 (mmHg); V refers to the amount of N2 adsorbed per unit weight of the sample (cm 3 / g); Vm refers to the monomolecular saturation adsorption of N2 on the sample surface (cm 3 / g); C refers to a constant related to the adsorption performance of the material.

[0092] The pore volume of Ag(I)-based silica adsorption measured by the above method is 0.37-0.48 cm 3 / g, specific surface area is 656~864m 2 / g.

[0093] Experimental Example 2 Determination of adsorption capacity and regeneration rate

[0094] The calculation formula of adsorption capacity is:

[0095] Where Q represents the dynamic adsorption sulfur capacity (mmol S / g), v represents the flow rate of the simulated fuel, that is, the flow rate set by the high-pressure infusion pump (mL / min), and m ads represents the mass of the adsorbent (g), X i represents the total mass of sulfur in the model fuel (g), ρ fuel represents the density of the model fuel (g / mL), MW suflur represents the molar mass of sulfur atom (g / mol). i represents the initial concentration of the model fuel (ppm), C t represents the concentration (ppm) of the effluent at the outlet of the U-tube at time t. The above-mentioned model fuel refers to the simulated oil used in this application.

[0096] Regeneration efficiency calculation formula: Regeneration efficiency = Q i / Q0×100%,

[0097] Where, Q0 represents the initial adsorption of thiophene in simulated oil by Ag(I)-based silica (mg / g); Q i It represents the adsorption amount of thiophene in simulated oil by Ag(I)-based silica adsorbent after i-time regeneration (mg / g).

[0098] The initial adsorption capacity, saturated adsorption capacity after 5 regenerations, and regeneration rate data of the Ag(I)-based silica adsorbent in each embodiment and comparative example are shown in Table 1.

[0099] Table 1. Parameters of each step in the embodiments and comparative examples and corresponding performance test data

[0100]

[0101]

[0102]

[0104] It can be seen from the control data of the embodiments and comparative examples that the technical solution provided by the present invention has well solved the current problems of low adsorption capacity and poor regeneration effect of silica adsorbents, and achieved good technical effects. By mixing the silica carrier with the silver nitrate solution in a mass volume ratio of 1g: (15-40) mL, the active sites can be easily and efficiently obtained to greatly increase the adsorption of Ag (I)-based silica adsorbent. It should be noted that when the silver nitrate solution is replaced with an equal concentration of silver acetate solution, the technical effect of the present application cannot be achieved.

[0105] It should be understood that the disclosed invention is not limited only to the specific method, scheme and material of description, because these all can change.It should also be understood that the terminology used herein is only for the purpose of describing specific embodiment scheme, rather than being intended to limit the scope of the present invention, and the scope of the present invention is only limited to the appended claims.

[0106] Those skilled in the art will also recognize, or be able to ascertain using no more than routine experimentation, many equivalents to the specific embodiments of the invention described herein. Such equivalents are also intended to be encompassed by the appended claims.

Claims

1. A method for preparing an Ag(Ⅰ)-based silica adsorbent, characterized in that: The steps include: Adding a silica carrier to a silver nitrate solution, stirring, filtering, washing, and vacuum drying to obtain the Ag(Ⅰ)-based silica adsorbent; The mass volume ratio of the silica carrier to the silver nitrate solution is 1 g: (15-40) mL; and the concentration of the silver nitrate solution is 0.05-0.5 mol / L.

2. The preparation method according to claim 1, characterized in that: The mass volume ratio of the silica carrier to the silver nitrate solution is 1 g: (20-30) mL; the concentration of the silver nitrate solution is 0.1-0.3 mol / L.

3. The preparation method according to claim 1, characterized in that: The mixture is stirred at a temperature of 20 to 50° C. for 2 to 5.5 hours. Preferably, the vacuum drying temperature is 80 to 120° C., and the vacuum drying time is 8 to 16 hours.

4. The preparation method according to claim 1, characterized in that: The silica carrier includes one or more of ultra-microporous silica SMS, KIT-6, SBA-15 and MCM-41.

5. The Ag(Ⅰ)-based silica adsorbent obtained by the preparation method according to any one of claims 1 to 4.

6. The Ag(I)-based silica adsorbent according to claim 5, characterized in that: The pore volume of the adsorbent is 0.37-0.48 cm 3 / g, specific surface area is 656~864m 2 / g.

7. The Ag(I)-based silica adsorbent according to any one of claims 5 to 6 is used for adsorbing and / or removing sulfides in oil products.

8. The use of the Ag(I)-based silica adsorbent according to claim 7, characterized in that: The steps include: The sulfide-containing oil product is set to a flow state with a flow rate of 0.01 to 0.05 mL / min; Allowing the adsorbent to contact the fluidized oil product at a temperature of 30 to 50° C.; The oil product in the fluid state is in contact with the adsorbent to obtain the Ag(Ⅰ)-based silica adsorbent after application; Wherein, the sulfide includes one or more of thiophene, benzothiophene and dibenzothiophene.

9. The use of the Ag(I)-based silica adsorbent according to claim 8, characterized in that: The oil product includes simulated oil or crude fuel oil. Preferably, when the oil product is simulated oil, the concentration of the sulfide is 100-500 ppm.

10. The method for regenerating the Ag(I)-based silica adsorbent according to any one of claims 5 to 6, characterized in that: The steps include: placing the saturated Ag(I)-based silica adsorbent in a microwave environment, adjusting the power and time of the microwave reactor to obtain a regenerated Ag(I)-based silica adsorbent; Preferably, the adsorption-saturated Ag(I)-based silica adsorbent is an Ag(I)-based silica adsorbent obtained by being used in the process of adsorbing and / or removing sulfides in oil products; more preferably, the microwave power in the microwave environment is 210 to 700 W, and the adsorption-saturated Ag(I)-based silica adsorbent is placed in the microwave environment for 3 to 15 min.

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