CN102359989B - Multifunctional catalyst reaction evaluation and characterization device and application thereof - Google Patents

Multifunctional catalyst reaction evaluation and characterization device and application thereof Download PDF

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CN102359989B
CN102359989B CN 201110200634 CN201110200634A CN102359989B CN 102359989 B CN102359989 B CN 102359989B CN 201110200634 CN201110200634 CN 201110200634 CN 201110200634 A CN201110200634 A CN 201110200634A CN 102359989 B CN102359989 B CN 102359989B
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gas circuit
gas
reaction
characterization
pipeline
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CN 201110200634
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CN102359989A (en
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李永立
朱志荣
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上海上计群力分析仪器有限公司
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Abstract

The invention provides a multifunctional catalyst reaction evaluation and characterization device and application thereof. The characterization device comprises a gas circuit control component, a catalytic reaction component, a detection function switching component, a signal detection processing component and a detection gas circuit balancing component. The multifunctional catalyst reaction evaluation and characterization device has the advantages that gas chromatography thermal conductivity detection, hydrogen flame ionization detection and catalyst evaluation systems are integrated, different detection modes are realized by different combination of electromagnetic valves, and more than ten chromatographic analysis and catalyst reaction evaluation and characterization functions are realized by the aid of a catalytic reaction portion.

Description

A kind of multifunction catalyst reaction evaluating characterization apparatus and application thereof
Technical field
The present invention relates to a kind of catalyst test apparatus, particularly relate to a kind of multifunction catalyst reaction evaluating characterization apparatus.
Background technology
The catalytic reaction technology played a very important role in chemical industry in modern age, and the chemicals used in people's life at present all directly or indirectly relies on catalysis technique production and obtains more than 85%.Therefore, in the R&D and production process of catalyzer, the assay of catalyzer physicochemical property is most important, and it is the basis of understanding catalytic mechanism and design catalyzer, is also the means of product quality of controlling in Catalyst Production.Although along with the new catalyst characterization method of scientific and technical development constantly occurs, be most important link in catalyst characterization and carry out the way of assay catalysis material by gas chromatographic technique in recent years always.
At present, characterize aspect catalyzer the program of additional a set of temperature programme catalyst reaction device before the commodity gas phase analyzer often in chromatographic process, require further to add assembly (as six three-way electromagnetic valve door sampling apparatuses etc.) according to different signs and reach the purpose that corresponding catalyst analysis is estimated.At the online sampling analysis device of published patent CN96211985.7, the quick on-line sampling sampling device of patent CN200610041677.5 multi-channel gas and catalyst performance evaluation system, and in these patent documentations of a patent CN200710064984.X miniature reactor-gas-chromatography combinatorial analysis evaluating system, wherein gas chromatography is only as reaction product on-line analysis function, save analysis time, improve accuracy, but can not carry out the mensuration sign of other performance of catalyzer.Simultaneously, this class apparatus function is often more single, and simultaneously catalytic reaction assembly and stratographic analysis assembly are separate, cause the bulky of equipment set, and maintenance and the lab space utilization of instrument all brought to much inconvenience.According to the purposes of in many ways investigating existing simple type chromatogram characterization apparatus, be confined at temperature programmed reduction (TPR), temperature programmed desorption (TPD), the a few functions aspects such as pulse catalytic reactor, can't really meet the multifunction demand that chromatography detects for the catalyst property multianalysis.
Therefore, we need a kind of device of evaluating catalyst, catalytic reaction and stratographic analysis can be combined, and realize pulse and continuous catalytic reaction, the real-time sampling sample introduction analysis of catalytic reaction and the several functions such as physicochemical characteristics evaluation of catalyzer of catalyzer.
Summary of the invention
For solving the deficiencies in the prior art, first purpose of the present invention is, provide a kind of catalyst reaction to estimate characterization apparatus, it is combined as a whole gas chromatographic analysis detection and catalyst reaction evaluation, Catalyst Characterization System, realizes that multiple stratographic analysis and catalyst reaction evaluation, catalyst property characterize function.
Second purpose of the present invention is, provides above-mentioned catalyst reaction to estimate the application of characterization apparatus.
For realizing first purpose, the technical scheme that the present invention takes is:
A kind of catalyst reaction is estimated characterization apparatus, comprise: gas circuit Control Component, catalytic reaction assembly, measuring ability changeover module, input processing components and detection gas circuit balanced component, described gas circuit Control Component, catalytic reaction assembly, measuring ability changeover module and detection gas circuit balanced component are connected successively by pipeline, and described input processing components is connected by pipeline with the measuring ability changeover module.
Described gas circuit Control Component comprises several air intake openings and solenoid valve.
Preferably, described gas circuit Control Component comprises four air intake openings and three four way solenoid valves, by described gas circuit Control Component be divided into three carrier gas and (or) the reaction gas gas circuit.
Preferably, described each carrier gas and (or) the reaction gas gas circuit is provided with a mass flowmeter.More preferably, one of them carrier gas and (or) the reaction gas gas circuit also is provided with a needle valve, before described needle valve is located at mass flowmeter; All the other gas circuits come together in a three-way solenoid valve.
Described gas circuit Control Component is responsible for switching and is controlled carrier gas and the reactant gas in the catalyst analysis evaluation, the flow direction by described solenoid valve switching carrier gas or reaction gas gas, the flow velocity of controlling carrier gas or reaction gas gas by mass flowmeter and the needle valve of automatic control, wherein needle valve plays the effect of fine setting gas flow rate.
Described catalytic reaction assembly, comprise reactor and can control the attemperating unit of this temperature of reactor.
Preferably, described catalytic reaction assembly also comprises six three-way electromagnetic valves, described six three-way electromagnetic valves are connected by pipeline successively with reactor, described six three-way electromagnetic valves are connected by pipeline with the gas circuit Control Component, described reactor is connected by pipeline with the measuring ability changeover module, and described attemperating unit is electrically connected to reactor.
More preferably, on the connecting tube of six three-way electromagnetic valves and gas circuit Control Component, on the connecting tube of reactor and measuring ability changeover module and six three-way electromagnetic valves and and reactor between connecting tube on, be respectively equipped with and disconnect mouth, described disconnection mouthful is used for optionally connecting different annexes.Described annex is selected from, but is not limited to, one or more in liquid nitrogen condensation device, steam bubble device.
Described catalytic reaction assembly is responsible for reactant is offered to reactor with gas or the impulse form of continuous flow, implements the catalyst characterization analytic process of multiple other function simultaneously.In order to realize the purpose of the system of simplifying the operation, this part has used several different function accessories, can in different positions, select to add as required.The catalytic reaction control system of this device can be selected the mode of six three-way electromagnetic valve Pulsed Samplings or successive reaction thing sample introduction, has adopted annex mode and six three-way electromagnetic valves to combine simultaneously, can select two kinds of input modes of reactant gas or liquid.
Described measuring ability changeover module comprises stratographic analysis post and several solenoid valve.
Preferably, described measuring ability changeover module is connected in sequence by pipeline by the one or six three-way electromagnetic valve, four way solenoid valve, the two or six three-way electromagnetic valve; Described chromatographic column is connected by pipeline with arbitrary described six three-way electromagnetic valves, and this six three-way electromagnetic valve also is connected by pipeline with the input processing components with the catalytic reaction assembly.
Described input processing components comprises chromatogram detecting device and a signal processor.
Preferably, described chromatographic detector is thermal conductivity detector (TCD) (TCD detecting device) or flame ionization ditector (fid detector).
Described detection gas circuit balanced system contains several air intake openings.
Preferably, described detection gas circuit balanced system contains two air intake openings, is divided into 2 gas circuits, and each gas circuit is connected in sequence by pipeline by pressure maintaining valve, needle valve and injector.Arbitrary described gas circuit is connected by pipeline with the input processing components, and another gas circuit is connected by pipeline with the measuring ability changeover module.
The present invention also provides above-mentioned catalyst reaction to estimate the application of characterization apparatus in gas chromatographic analysis detection and catalyst reaction evaluation, catalyst characterization.Select different gas channels by switching solenoid valve, general formula adds different annexes, meets different testing requirements.
The invention has the beneficial effects as follows: GC thermal conductivity, hydrogen flameionization detection and evaluating catalyst system combination are integrated, realize different detection modes by the various combination of solenoid valve, in conjunction with catalytic reacting section, realize the nearly stratographic analysis more than ten kinds and catalyst reaction evaluation and characterize function.
The accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present invention;
Accompanying drawing 2 be the present invention for measuring TPR, TPD, the reaction wiring diagram of TPO and BET;
Accompanying drawing 3 is that the present invention carries out steam bubble continuous catalytic reaction process flow diagram;
Accompanying drawing 4 is that the present invention carries out steam pulse catalytic reactor process flow diagram.
Wherein:
1-gas circuit Control Component; 2-catalytic reaction assembly;
3-measuring ability changeover module; 4-input processing components;
5-detection gas circuit balanced component; 14-mass flowmeter;
22-reactor; The attemperating unit of 23-reactor;
33-chromatographic column; 41-signal amplifier;
42-signal output apparatus; 43-chromatographic detector.
Embodiment
For allowing above-mentioned purpose of the present invention, feature and advantage become apparent, preferred embodiment of the present invention cited below particularly, and coordinate accompanying drawing, be described in detail below.Moreover, the direction term that the present invention mentions, such as " on ", D score, 'fornt', 'back', " left side ", " right side ", " interior ", " outward ", " side " etc., be only the direction with reference to annexed drawings.Therefore, the direction term of use is in order to illustrate and to understand the present invention, but not in order to limit the present invention.
Refer to accompanying drawing 1, a kind of catalyst reaction of the present invention is estimated characterization apparatus, comprising: gas circuit Control Component 1, catalytic reaction assembly 2, measuring ability changeover module 3, input processing components 4 and detection gas circuit balanced component 5.
Described gas circuit Control Component 1 comprises 4 air intake openings and 3 four way solenoid valves 11, by described gas circuit Control Component 1 be divided into 3 carrier gas and (or) reaction gas gas circuit (a, b, c).Each carrier gas and (or) reaction gas gas circuit (a, b, c) is provided with a mass flowmeter 14.
Please continue referring to accompanying drawing 1, carrier gas and (or) also be provided with a needle valve 13 on reaction gas gas circuit c, before described needle valve 13 is located at mass flowmeter 14; Gas circuit a and b come together in three-way solenoid valve 12.By using four way solenoid valve 11 and three-way solenoid valve 12 to realize the flow direction of switching carrier gas and reaction gas, the flow velocity that the mass flowmeter 14 by using automatic control and needle valve 13 realize controlling carrier gas and reaction gas, described needle valve 13 is for finely tuning gas flow rate.
Please continue to consult accompanying drawing 1, described catalytic reaction assembly 2 comprises six three-way electromagnetic valves 21, reactor 22 and controls the attemperating unit 23 of reactor 22 temperature.The left side of described six three-way electromagnetic valves 21 is connected by pipeline with c road gas circuit with the three-way solenoid valve 12 of gas circuit Control Component 1 respectively, and the right side of six three-way electromagnetic valves 21 is connected with reactor 22.Described six three-way electromagnetic valves 21 are equipped with disconnection mouthful with junction and the reactor 22 of sample introduction reactor 22 with the junction of measuring ability changeover module with c road gas circuit connecting place, six three-way electromagnetic valves 21 of gas circuit Control Component 1, be in Fig. 1, the right side of the left and right sides of six three-way electromagnetic valves 21 and reactor 22 is equipped with and disconnects mouth.Described disconnection mouthful is used for connecting different annexes, as steam bubble device and the condenser in accompanying drawing 1.Also be connected with volumetric bottle 24 on described six three-way electromagnetic valves 21, for realizing the impulse form sample introduction.
Like this, the present invention can offer reactor 22 with gas or the impulse form of continuous flow by reactant, realizes two kinds of input modes of six three-way electromagnetic valve pulses and successive reaction thing.Simultaneously, by the position different, select to add several different annexes, can implement the catalyst characterization analytic process of multiple other function.Adopt annex mode and six three-way electromagnetic valves to combine simultaneously, can select two kinds of input modes of reactant gas or liquid.
Please continue to consult accompanying drawing 1, described measuring ability changeover module 3 is connected in sequence by pipeline by the one or six three-way electromagnetic valve 31, four way solenoid valve 32 and the two or six three-way electromagnetic valve 34.Wherein the two or six three-way electromagnetic valve 34 is connected with the chromatographic detector 43 in the input processing components with the reactor 22 in chromatographic column 33, catalytic reaction assembly; The one or six three-way electromagnetic valve 31 is connected with the gas circuit e in detecting gas circuit balanced system 5.Described the one or six three-way electromagnetic valve 31 also is connected with certain measuring bottle 35, for realizing Pulsed Sampling.
By utilizing the various combination of six three-way electromagnetic valves 31,34 and four way solenoid valve 32, can select to generate three kinds of diverse detection modes, that is: successive reaction air-flow direct-detection (as shown in Figure 2), the pulse reaction potpourri directly carries out detecting (as shown in Figure 4) after chromatographic resolution, and successive reaction potpourri Pulse Chromatographic post separates the rear analysis (as shown in Figure 3) that detects.Just because of the multiple input mode of catalytic reaction assembly 2 and the use of annex, in conjunction with the different detection modes of measuring ability changeover module 3, make the present invention realize pulse and continuous catalytic reaction, the real-time sampling sample introduction analysis of catalytic reaction and the several functions such as physicochemical characteristics evaluation of catalyzer of catalyzer simultaneously simultaneously.
Please continue to consult accompanying drawing 1, described input processing components 4 comprises chromatographic detector 43 and signal processor, and described signal processor comprises signal amplifier 41 and signal output apparatus 42.Preferably, described chromatographic detector 43 is thermal conductivity detector (TCD) (TCD).
The collection that described input processing components 4 is responsible for detection signal is amplified and output.
Please continue to consult accompanying drawing 1, described detection gas circuit balanced system 5 contains 2 air intake openings, is divided into 2 tunnel gas circuits (d, e), and each gas circuit (d, e) is respectively by pressure maintaining valve 51, and needle valve 52 and injector 53 are connected in sequence by pipeline.Gas circuit d is connected with the chromatographic detector 43 in input processing components 4.
Described detection gas circuit balanced system 5 is controlled required balanced gas or carrier gas in the measuring ability changeover module.
During use, gas circuit d and the e of open detection gas circuit balanced system 5, add H 2or He gas, six three-way electromagnetic valves 31 and 34 in change detection function switched system 3, open the temperature of chromatographic column, input disposal system and each assembly and control, and can realize stratographic analysis.
Accompanying drawing 2 is that apparatus of the present invention are reacted (TPR) for temperature programmed reduction, temperature programmed desorption (TPD), and the reaction wiring diagram of temperature programmed oxidation reaction (TPO) and specific area measuring (BET), in figure, dotted line is conducting state, solid line is closure state.
Refer to accompanying drawing 2, open the gas circuit d that detects gas circuit balanced system 5 and be written into He gas, open gas circuit a and b in gas circuit Control Component 1, and be written into reaction gas H in gas circuit a 2, O 2or N 2, be written into He gas in gas circuit b.Like this, take He as carrier gas, mix H simultaneously 2, can carry out temperature programmed reduction reaction (TPR); Take He as carrier gas, mix O simultaneously 2, can carry out temperature programmed oxidation reaction (TPO); Take He as carrier gas, mix N simultaneously 2gas, can measure the specific surface area (BET) of catalyzer.Under the condition of measurement the specific area, use condenser as annex; In the process of temperature programmed surface reaction, select chromatographic column in measuring ability changeover module 3 to separate, and with six logical mode sample introductions, composition that can the on-line analysis reaction product simultaneously.
Refer to accompanying drawing 3, accompanying drawing 3 is that the present invention carries out steam bubble continuous catalytic reaction process flow diagram.The gas circuit b in opening gas circuit Control Component 1 be written into H only 2, the gap between six three-way electromagnetic valves 21 and sample introduction reactor 22 connects the steam bubble device.Like this, make H 2by the bubbling mode, liquid reactants is taken in reactor 32, after the continuous catalytic hydrogenation reaction, enter measuring ability changeover module 3., enter chromatographic detector 43 and carry out stratographic analysis with after chromatographic column 33 is separated through six three-way electromagnetic valves 31 samplings.
This flow process, except hydrogenation reaction, also can be carried out oxidation reaction, the reaction of other type such as isomerization reaction.
Refer to accompanying drawing 4, accompanying drawing 4 is that the present invention carries out steam pulse catalytic reactor process flow diagram.Gas circuit b in opening gas circuit Control Component 1 and c, be written into respectively H 2and N 2.Be connected the steam bubble device at six three-way electromagnetic valves 21 with the disconnection mouth of gas circuit c junction.By using N 2or H 2the bubbling organic liquid, utilize quantity tube 24 sample introductions of six three-way electromagnetic valves 21, with H 2as reaction gas, carry out hydrogenation reaction.Then, the gas after hydrogenation reaction in measuring ability changeover module 3, after being separated by chromatographic column 33, entering signal detecting processing system output-response result.
This reaction can be selected cracking reaction, isomerization reaction etc. simultaneously.
In all flow processs, can, according to the requirement of catalyzer, carry out the pre-service under the differential responses condition.
Several concrete testing processes below are provided.
embodiment 1
The TPD function characterizes acidity of catalyst matter: 0.205g 40~60 purpose ZSM-5 molecular sieve catalyst samples are placed in to the reaction tube that catalyst reaction is estimated characterization apparatus, and reaction tube is put into to reactor 22.TPR/TPD/ TPO and BET that device is switched to as accompanying drawing 2 measure the path mode.Pass into helium in gas circuit b, by the interior temperature of attemperating unit 23 conditioned reaction device 22 as for 550 ℃.Under helium atmosphere, (helium flow velocity 25 ml/min) 550 ℃ carry out pre-service 2 h to sample, then are cooled to 120 ℃.Stop helium and supply with, and pass into ammonia in gas circuit a, the situation of by signal output apparatus 42, observing described catalyzer absorbing ammonia.When signal output apparatus 42 shows the catalyzer absorbing ammonia to saturation balance, close gas circuit a and supply with to stop ammonia, and opening gas circuit b, use the helium purge sample.After the detection signal baseline shown until signal output apparatus 42 is walked steadily, start the temperature programmed desorption of sample introduction reactor 22, temperature rises to 650 ℃ from 120 ℃ of heating rates with 10 ℃/min, obtain the ammonia signal curve of continuous detecting desorption on signal output apparatus 42, press the temperature section of desorption ammonia (than weak component I=120-330 ℃, stronger assembly II=330-550 ℃) (unit is: mM mmol) quantitatively to calculate ammonia quantity, be the Surface acidity of catalyzer, be respectively than weak component 0.652 mmol/g, stronger assembly 0.310 mmol/g.
embodiment 2
The TPR function characterizes catalyst reduction character: 0.212g 40~60 purpose alumina load nickel oxide catalyst samples are placed in to reaction tube, and reaction tube is put into to reactor 22.TPR/TPD/ TPO and BET that device is switched to as accompanying drawing 2 measure the path mode.Pass into helium in gas circuit b, by the interior temperature of attemperating unit 23 conditioned reaction device 22 as for 550 ℃.Under helium atmosphere, (helium flow velocity 25 ml/min) 550 ℃ carry out pre-service 2 h to sample, then are cooled to 120 ℃.Stop helium and supply with, and pass into the argon gas containing 20.0 % (wt) hydrogen in gas circuit a, observe the situation of described catalyzer absorption argon gas by signal output apparatus 42.When signal output apparatus 42 shows that catalyzer absorption argon gas is to saturation balance, after the detection signal baseline of signal output apparatus 42 is steady, the temperature programme that starts reactor 22 characterizes, temperature rises to 700 ℃ from 120 ℃ of heating rates with 10 ℃/min, during continuous detecting heats up, Reduction of Oxide consumption hydrogen forms signal curve, observe 330 ℃ and 550 ℃ of two reduction peak, illustrate that the load nickel oxide catalyst is reduced to nickel step by step, can quantitatively calculate consumption H simultaneously 2quantity (unit is: mM mmol), surface nickel amount 0.346 mmol/g(that is catalyzer is nickeliferous 2.0 %(wt)).
embodiment 3
The TPO function characterizes catalyst reduction character: use the Y molecular sieve catalyzer 0.238g sample of coking (carbon distribution) to be placed in reaction tube 40~60 purpose reactions, and reaction tube is put into to reactor 22.TPR/TPD/ TPO and BET that device is switched to as accompanying drawing 2 measure the path mode.Pass into helium in gas circuit b, by the interior temperature of attemperating unit 23 conditioned reaction device 22 as for 400 ℃.Under helium atmosphere, (helium flow velocity 25 ml/min) 400 ℃ carry out pre-service 2 h to sample, then are cooled to 120 ℃.Stop helium and supply with, and pass into the argon gas containing 10.0 % (wt) oxygen in gas circuit a, observe the situation of described catalyzer absorption argon gas by signal output apparatus 42.When signal output apparatus 42 shows that catalyzer absorption argon gas is to saturation balance, after the detection signal baseline that signal output apparatus 42 shows is walked steadily, the temperature programme that starts sample introduction reactor 22 characterizes, temperature rises to 800 ℃ from 120 ℃ of heating rates with 10 ℃/min, coking oxidation consumption O during continuous detecting heats up 2form signal curve, observe 330 ℃ and 550 ℃ of two oxidation peak, illustrate that the coking of Y molecular sieve catalyzer is oxidized to CO step by step 2, can quantitatively calculate consumption O simultaneously 2quantity (unit is: mM mmol), surface carbon amount 0.713 mmol/g(that is catalyzer is carbon distribution 0.86 %(wt)).
embodiment 4
The BET function characterizes catalyst surface area: the MOR molecular sieve catalyst 0.361g sample more than 100 orders is placed in to the cold-trap pipe, and TPR/TPD/ TPO and BET that device is switched to as accompanying drawing 2 measure the path mode.Pass into helium in gas circuit b, (helium flow velocity 25 ml/min) 500 ℃ of pre-service 2 h under helium atmosphere, then be cooled to room temperature, the cold-trap pipe is immersed in the liquid nitrogen cup, pass into the helium containing 5.0 % (V/V) nitrogen, be adsorbed to saturation balance, after signal base line to be detected is walked steadily, the liquid nitrogen cup is changed into and is greater than 90 ℃ of hot water cups, during continuous detecting heats up, desorption discharges nitrogen and forms signal curve, can quantitatively calculate desorption nitrogen quantity (mM mmol) simultaneously, repeat above-mentioned adsorption-desorption process, measure respectively containing 10.0 % (wt), desorption N under the helium of 20.0% (V/V) nitrogen 2quantity, the surface area that the application BET formula calculates catalyzer is 329 m 2/ g.
embodiment 5
The continuous catalysis of catalyzer (Cumene cracking) reaction evaluating: the ZSM-5 molecular sieve catalyst sample more than 0.520g 40~60 orders is placed in to reaction tube, and reaction tube is put into to reactor 22.Device is switched to the steam bubble continuous catalytic reaction path mode of Fig. 3.Under helium atmosphere, (helium flow velocity 25 ml/min) 450 ℃ carry out pre-service 2 h to sample, then be cooled to 390 ℃ of temperature of reaction, isopropyl benzene is packed in the steam bubble pipe, immerse in 80 ℃ of hot water cups, pass into the helium of 25 ml/min and reacted by sample introduction reactor 22.Switching the two or six three-way electromagnetic valve 34 after 30 minutes, negate answers the product gas sample to carry out stratographic analysis, detect the content of isopropyl benzene and benzene, quantitatively calculate isopropyl benzene conversion ratio and benzene yield, record respectively the isopropyl benzene conversion ratio 84.7%(wt of catalyzer) and benzene yield 93.1 %(wt), illustrate that catalyzer has than high reaction activity and selectivity.
embodiment 6
The continuous catalysis of catalyzer (xylene isomerization) reaction evaluating: the supporting Pt more than 0.415g 40~60 orders/ZSM-5 molecular sieve catalyst sample is placed in to reaction tube, and device is switched to steam pulse catalytic reactor path mode as shown in Figure 4.Pass into hydrogen in gas circuit b, (flow velocity 25 ml/min) 460 ℃ of pre-service 2 h under hydrogen atmosphere, then be cooled to 400 ℃ of temperature of reaction, by m-xylene with in the steam bubble pipe of packing into, immerse in 80 ℃ of hot water cups, pass into the hydrogen of 25 ml/min after 30 minutes, switch six three-way electromagnetic valves 21, by quantity tube 24 intercepting reactants (quantity tube is 100 microlitres), passing into sample introduction reactor 22 is reacted, product gas sample on-line chromatograph is analyzed, detect o-xylene, the content of P-xylene and m-xylene, quantitatively calculating the m-xylene conversion ratio is 46.1%(wt) and o-xylene yield 93.1%(wt), the P-xylene yield, illustrate that catalyzer has higher reaction conversion ratio and selectivity of product.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, without departing from the inventive concept of the premise; can also make some changes, improvements and modifications, these changes, improvements and modifications also should be considered as protection scope of the present invention.

Claims (7)

1. a multifunction catalyst reaction evaluating characterization apparatus, is characterized in that, described characterization apparatus comprises:
-gas circuit Control Component, comprise several air intake openings and solenoid valve;
-catalytic reaction assembly, comprise reactor and can control the attemperating unit of this temperature of reactor;
-measuring ability changeover module, comprise stratographic analysis post and several solenoid valve;
-input processing components, comprise chromatographic detector and signal processor;
-detect the gas circuit balanced component, comprise several air intake openings;
Described gas circuit Control Component, catalytic reaction assembly, measuring ability changeover module and detection gas circuit balanced component are connected successively by pipeline, and described input processing components is connected by pipeline with the measuring ability changeover module;
Wherein,
Described measuring ability changeover module is connected in sequence by pipeline by the one or six three-way electromagnetic valve, four way solenoid valve, the two or six three-way electromagnetic valve; Described stratographic analysis post is connected by pipeline with the described first or the 26 three-way electromagnetic valve, and this six three-way electromagnetic valve also is connected by pipeline with the input processing components with the catalytic reaction assembly;
Described catalytic reaction assembly also comprises the three or six three-way electromagnetic valve, described the three or six three-way electromagnetic valve is connected by pipeline successively with described reactor, described the three or six three-way electromagnetic valve is connected by pipeline with described gas circuit Control Component, described reactor is connected by pipeline with described measuring ability changeover module, and described attemperating unit is electrically connected to described reactor; On the connecting tube of described the three or six three-way electromagnetic valve and gas circuit Control Component, on the connecting tube of described reactor and measuring ability changeover module and on the connecting tube between described the three or six three-way electromagnetic valve and reactor, be respectively equipped with and disconnect mouth, described disconnection mouthful is used for optionally connecting different annexes.
2. catalyst reaction according to claim 1 is estimated characterization apparatus, it is characterized in that, described chromatographic detector is thermal conductivity detector (TCD) or flame ionization ditector.
3. catalyst reaction according to claim 1 is estimated characterization apparatus, it is characterized in that, described detection gas circuit balanced component contains two air intake openings, is divided into two gas circuits, and each gas circuit is connected in sequence by pipeline by pressure maintaining valve, needle valve and injector; Wherein arbitrary described gas circuit is connected by pipeline with the input processing components, and another gas circuit is connected by pipeline with the measuring ability changeover module.
4. estimate characterization apparatus according to the arbitrary described catalyst reaction of claim 1-3, it is characterized in that, described gas circuit Control Component comprises four air intake openings and three four way solenoid valves, and described gas circuit Control Component is divided into to three carrier gas and/or reaction gas gas circuit.
5. catalyst reaction according to claim 4 is estimated characterization apparatus, it is characterized in that, described each carrier gas and/or reaction gas gas circuit are provided with a mass flowmeter.
6. catalyst reaction according to claim 5 is estimated characterization apparatus, it is characterized in that, one of them carrier gas and/or reaction gas gas circuit also are provided with a needle valve, and all the other carrier gas and/or reaction gas gas circuit come together in a three-way solenoid valve.
7. the arbitrary described catalyst reaction of a claim 1-6 is estimated the application of characterization apparatus in gas chromatographic analysis detection and catalyst reaction evaluation, catalyst characterization.
CN 201110200634 2011-07-18 2011-07-18 Multifunctional catalyst reaction evaluation and characterization device and application thereof CN102359989B (en)

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CN103558301B (en) * 2013-09-30 2015-05-13 华东师范大学 Micro-size catalyst in-situ pulse evaluation and analysis device
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