CN1041710A - 氨氧化实验用的催化剂 - Google Patents

氨氧化实验用的催化剂 Download PDF

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Publication number
CN1041710A
CN1041710A CN88105136A CN88105136A CN1041710A CN 1041710 A CN1041710 A CN 1041710A CN 88105136 A CN88105136 A CN 88105136A CN 88105136 A CN88105136 A CN 88105136A CN 1041710 A CN1041710 A CN 1041710A
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Prior art keywords
catalyzer
experiment
ammonia oxidation
oxide
present
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CN88105136A
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English (en)
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刘铭强
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EXPERIMENTAL TEACHING INSTRUMENT GENERAL FACTORY LIAONING PROV
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EXPERIMENTAL TEACHING INSTRUMENT GENERAL FACTORY LIAONING PROV
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Priority to CN88105136A priority Critical patent/CN1041710A/zh
Publication of CN1041710A publication Critical patent/CN1041710A/zh
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    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C1/00—Ammonia; Compounds thereof
    • C01C1/02—Preparation, purification or separation of ammonia
    • C01C1/04—Preparation of ammonia by synthesis in the gas phase
    • C01C1/0405—Preparation of ammonia by synthesis in the gas phase from N2 and H2 in presence of a catalyst
    • C01C1/0411—Preparation of ammonia by synthesis in the gas phase from N2 and H2 in presence of a catalyst characterised by the catalyst
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Catalysts (AREA)

Abstract

本发明属于一种催化剂，特别是用于氨氧化实验的催化剂。它是由氧化铁和氧化铋或者氧化钴和氧化铋按一定的比例，配制成的。在氨氧化演出实验中，加入本发明作为催化剂，在2-3分钟内，就可看到棕红色的二氧化氮生成，效果明显，成本低廉，适合中学化学实验课使用。

Description

本发明属于一种催化剂，特别是用于氨氧化实验用的催化剂。
氨氧化演示实验是高中化学教材中的重点，也是一个难度较大的实验。这个实验告诉学生，氨气和氧气在催化剂铂丝加热的作用下，能生成一氧化氮，一氧化氮不稳，极易被氧化，瞬时能变成二氧化氮。在理论上，二氧化氮是呈棕红色的，但在实际实验中，学生很难看到棕红色，只能勉强地看到淡黄色。这说明在铂丝加热这种催化剂的作用下，氨氧化是不彻底、不完全的，这就是所说的难点。同时，由于该实验所选用的催化剂是铂丝，价格昂贵，多数中学，特别是乡村学校难以解决。
本发明的任务是：提供一种能使氨氧化效果明显、成本低廉的催化剂。
本发明的任务是采用下列配方实现的：它是由3～5%的氧化铋，95～97%的氧化铁或氧化钴所组成、加热后用于氨气和氧气的反应：
在2～3分钟后，即可看到棕红色现象。
本发明与现有的催化剂铂丝相比，具有以下两点优点：
1、能使氨氧化反应迅速、彻底、效果明显;
2、成本低廉。
下面结合附图详细描述在采用本发明作催化剂时，氨氧化演示实验。
图1是采用本发明作催化剂时的氨氧化演示实验流程图。
在本实施例中，本发明的配方为：95%的氧化铁，5%的氧化铋。
演示实验的流程为：
①将两个干燥管4抽干，装入无水氯化钙CaCl2，起干燥作用;
②在广口瓶2内装入1/3瓶，浓度为1∶1的氨水，左端的鼓气球管1应在液面上10毫米处;
③向量杯6内倒入40毫升的石蕊溶液，作为检验试剂;
④在氧化管3内装入本发明和500W电阻丝;
⑤按图中所示将胶塞导管与容器连接严密;
⑥给电阻丝通电，至出现暗红色为止;
⑦鼓气球1鼓入空气，氨气和空气中的氧气在氧化管3内反应，可看到烧瓶4内有大量的棕红色NO2气体生成，片刻量杯6内的石蕊试剂由紫色变成红色。
本发明的配方还可以是：97%的氧化钴，3%的氧化铋。重复上述实验，仍可看到烧瓶4内有大量的棕红色NO2气体生成。

Claims (3)

1、一种用于氨氧化催化剂，其特征是：它是由3～5%的氧化铋、95～97%的氧化铁或氧化钴所组成。
2、按照权利要求1所述的催化剂，其特征是：它是由5%的氧化铋、95%的氧化铁所组成。
3、按照权利要求1所述的催化剂，其特征是：它是由3%的氧化铋，97%的氧化钴所组成。
CN88105136A 1988-10-07 1988-10-07 氨氧化实验用的催化剂 Pending CN1041710A (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN88105136A CN1041710A (zh) 1988-10-07 1988-10-07 氨氧化实验用的催化剂

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN88105136A CN1041710A (zh) 1988-10-07 1988-10-07 氨氧化实验用的催化剂

Publications (1)

Publication Number Publication Date
CN1041710A true CN1041710A (zh) 1990-05-02

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CN88105136A Pending CN1041710A (zh) 1988-10-07 1988-10-07 氨氧化实验用的催化剂

Country Status (1)

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CN (1) CN1041710A (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101757953B (zh) * 2008-12-23 2016-09-07 舒德化学催化剂意大利有限责任公司 氨氧化催化剂

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101757953B (zh) * 2008-12-23 2016-09-07 舒德化学催化剂意大利有限责任公司 氨氧化催化剂

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