JPS6210495B2 - - Google Patents
Info
- Publication number
- JPS6210495B2 JPS6210495B2 JP56018997A JP1899781A JPS6210495B2 JP S6210495 B2 JPS6210495 B2 JP S6210495B2 JP 56018997 A JP56018997 A JP 56018997A JP 1899781 A JP1899781 A JP 1899781A JP S6210495 B2 JPS6210495 B2 JP S6210495B2
- Authority
- JP
- Japan
- Prior art keywords
- molybdenum
- iron
- methylal
- catalyst
- chromium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 40
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 24
- 239000003054 catalyst Substances 0.000 claims description 22
- NKDDWNXOKDWJAK-UHFFFAOYSA-N dimethoxymethane Chemical compound COCOC NKDDWNXOKDWJAK-UHFFFAOYSA-N 0.000 claims description 14
- 238000006243 chemical reaction Methods 0.000 claims description 13
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 12
- 229910052742 iron Inorganic materials 0.000 claims description 12
- 229910052750 molybdenum Inorganic materials 0.000 claims description 12
- 239000011733 molybdenum Substances 0.000 claims description 12
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 9
- 229910052804 chromium Inorganic materials 0.000 claims description 9
- 239000011651 chromium Substances 0.000 claims description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 238000007254 oxidation reaction Methods 0.000 claims description 8
- 229910052783 alkali metal Inorganic materials 0.000 claims description 5
- 229910052787 antimony Inorganic materials 0.000 claims description 4
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims description 4
- 229910052797 bismuth Inorganic materials 0.000 claims description 4
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 4
- 229910017052 cobalt Inorganic materials 0.000 claims description 4
- 239000010941 cobalt Substances 0.000 claims description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 4
- 229910052721 tungsten Inorganic materials 0.000 claims description 4
- 239000010937 tungsten Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000004480 active ingredient Substances 0.000 claims description 2
- 150000001340 alkali metals Chemical class 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 claims 1
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 10
- 239000006227 byproduct Substances 0.000 description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 229910002091 carbon monoxide Inorganic materials 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- TZIHFWKZFHZASV-UHFFFAOYSA-N methyl formate Chemical compound COC=O TZIHFWKZFHZASV-UHFFFAOYSA-N 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 1
- 239000005751 Copper oxide Substances 0.000 description 1
- BDAGIHXWWSANSR-UHFFFAOYSA-M Formate Chemical compound [O-]C=O BDAGIHXWWSANSR-UHFFFAOYSA-M 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 229910052792 caesium Inorganic materials 0.000 description 1
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 238000000975 co-precipitation Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 229910000431 copper oxide Inorganic materials 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- DSMZRNNAYQIMOM-UHFFFAOYSA-N iron molybdenum Chemical compound [Fe].[Fe].[Mo] DSMZRNNAYQIMOM-UHFFFAOYSA-N 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 229910052701 rubidium Inorganic materials 0.000 description 1
- IGLNJRXAVVLDKE-UHFFFAOYSA-N rubidium atom Chemical compound [Rb] IGLNJRXAVVLDKE-UHFFFAOYSA-N 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Description
【発明の詳細な説明】
本発明は、メチラール酸化反応によりホルムア
ルデヒドを製造する方法に関するものである。
さらに詳しくは、メチラールを、気相において
酸素を含有するガスによつて、触媒の存在下に酸
化する事によつてホルムアルデヒドを得る方法に
関するものである。
従来、ホルムアルデヒドの製造は、銀又は、鉄
−モリブデン触媒の存在下にメタノールを酸化す
る事によつて行なわれている。しかし、この方法
で得られるホルマリンの濃度は、量論的に反応し
たとしても63wt％である。それに対して、上記
のメチラールの酸化反応によつて得られるホルマ
リンの濃度は量論的には、83wt％であり、メタ
ノールの酸化にくらべて生成ガス中の水の量が非
常に少ないという特徴を有する。メチラールの酸
化反応に有効な触媒としてこれまでに知られてい
るのは、銀、酸化銅及びモリブデンを基本とし
て、それに鉄、マンガン、マグネシウム、カドミ
ウム、カルシウム等を加えた触媒である。しかし
ながら、これらの触媒では、一酸化炭素、ジメチ
ルエーテル、及びギ酸メチルの副生が多く、高選
択性でホルムアルデヒドを得る事は困難であつ
た。
本発明者らは、このような副生物の少ない、選
択性良好な触媒を開発すべく鋭意研究を重ねた結
果、鉄及びモリブデンに加えアルカリ金属元素、
アンチモン、ビスマス、クロム、タングステン、
コバルト及びニツケルの群から選ばれた１種又は
それ以上の金属元素を有効成分とする触媒が、上
記の副生物が少なく高選択性を有する事を見い出
した。
すなわち、本発明は、上記の触媒を用いたメチ
ラールの酸化によるホルムアルデヒドの製造に関
するものである。
これらの触媒を用いた場合、メチラールからの
ホルムアルデヒドの収率は90％以上であり、選択
率は95％以上であつた。又、一酸化炭素、ジメチ
ルエーテル、ギ酸メチルの生成は、非常に少なか
つた。
本発明に使用される触媒の例としては、鉄及び
モリブデンにクロムを加えたもの、更に、これに
ナトリウム、カリウム、ルビジウム、セシウムな
どのアルカリ金属元素を加えたもの、或は、鉄及
びモリブデンに、アンチモン、ビスマス、タング
ステン、コバルト、ニツケルを加えたものが挙げ
られる。
これらの元素の組成比率は、原子比でモリブデ
ンに対して鉄が0.05〜1.0、アルカリ金属元素、
アンチモン、ビスマス、クロム、タングステン、
コバルト、ニツケルの各元素の合計が0.01〜0.5
の範囲である。又、本発明における触媒の調製
は、通常、含浸法、共沈法等で行なわれるが、そ
の他の方法で行つても構わない。又、触媒の形態
も金属状、酸化物、塩化物、硝酸塩、水酸化物、
酢酸塩等、どの様な形でも構わない。なぜなら、
反応中、酸素雰囲気下では、最初どの様な形態で
あつても、酸化物と成るからである。
本発明の実施に際し、用いられる反応温度は、
通常は200ないし500℃の範囲である。200℃以下
では、ホルムアルデヒドの収率が低く、実際的で
なく500℃以上では、一酸化炭素の副生が激しく
ホルムアルデヒドの収率、選択率が低下するので
好ましくない。
本発明の実施に際し供給するメチラール：酸素
の組成比は、１：0.5〜１：３が好ましく、爆発
範囲をさけるために、窒素等の不活性ガスを共存
させることが好ましい。
又、供給ガスの空間速度（SV）は、2000ない
し50000hr-1の範囲が好ましい。
本反応は、常圧、加圧、減圧いずれによつても
良い。
次に、本発明を実施例によりさらに詳細に説明
する。
実施例 １
（NH4）3Mo750ｇを水500mlにとかした溶液と
FeCl3・6H2O20ｇを水500mlにとかした溶液と
CrCl36H2O5ｇを水100mlにとかした溶液を混合し
強撹拌した後、沈澱物を濾過洗浄する。その後、
110℃で２時間、400℃で４時間空気中で焼成して
生成物を得た。この生成物の、モリブデン：鉄：
クロムの原子比は、５：１：0.2であつた。この
生成物を錠剤成型して触媒として使用した。
メチラールの酸化反応は、メチラール：N2：
O2モル比：２：30：３の混合ガスを石英ガラス
製反応管中の触媒層にSV＝10000hr-1、反応温度
＝330℃で通過せしめて行つた。
その結果、メチラールの転化率は98％、ホルム
アルデヒドへの選択率は98％であつた。その際、
一酸化炭素１％、ジメチルエーテル１％が副生し
た。
比較例
（NH4）Mo7O2450ｇを水500mlにとかした溶液
とFeCl3・6H2O20ｇを水500mlにとかした溶液を
用いて実施例１と同様に調製して触媒を得た。こ
の触媒中のモリブデン：鉄の原子比は、4.5：１
であつた。
この触媒を用いて実施例１と同じ条件でメチラ
ールの酸化反応を行つた。その結果、メチラール
の転化率は100％、ホルムアルデヒドへの選択率
は、89.5％で、一酸化炭素７％、ジメチルエーテ
ル３％、ギ酸ムチル0.5％が副生した。
実施例 ２
実施例１で得られたモリブデン、鉄、クロムを
含む生成物10ｇを、0.5規定水酸化カリウム水溶
液20c.c.に10分間浸漬した後、濾過洗浄して400℃
で２時間窒素中で焼成した。この生成物中のモリ
ブデン：鉄：クロム：カリウムの原子比は、５：
１：0.2：0.1であつた。
この触媒を用いて、実施例１と同じ条件で反応
を行つた。その結果、メチラールの転化率100
％、選択率98％でホルムアルデヒドを得た。その
際、一酸化炭素１％、ジメチルエーテル１％が副
生した。
以下、種々の触媒を用いて実施例１と同じ条件
で反応を行つた場合の各種触媒の成績を表１に示
す。
【表】DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing formaldehyde by a methylal oxidation reaction. More specifically, it relates to a method for obtaining formaldehyde by oxidizing methylal in the gas phase with an oxygen-containing gas in the presence of a catalyst. Traditionally, formaldehyde is produced by oxidizing methanol in the presence of silver or iron-molybdenum catalysts. However, the concentration of formalin obtained by this method is 63 wt% even if the reaction is stoichiometric. On the other hand, the concentration of formalin obtained by the above-mentioned oxidation reaction of methylal is stoichiometrically 83wt%, which is characterized by the fact that the amount of water in the produced gas is extremely small compared to the oxidation of methanol. have Catalysts known so far as effective for the oxidation reaction of methylal are catalysts based on silver, copper oxide, and molybdenum, to which iron, manganese, magnesium, cadmium, calcium, etc. are added. However, these catalysts produce many by-products of carbon monoxide, dimethyl ether, and methyl formate, making it difficult to obtain formaldehyde with high selectivity. The present inventors have conducted intensive research to develop a catalyst with good selectivity and fewer by-products, and have found that, in addition to iron and molybdenum, alkali metal elements,
antimony, bismuth, chromium, tungsten,
It has been found that a catalyst containing one or more metal elements selected from the group of cobalt and nickel as an active ingredient has high selectivity with less of the above-mentioned by-products. That is, the present invention relates to the production of formaldehyde by oxidation of methylal using the above catalyst. When these catalysts were used, the yield of formaldehyde from methylal was 90% or more, and the selectivity was 95% or more. Furthermore, the production of carbon monoxide, dimethyl ether, and methyl formate was extremely small. Examples of catalysts used in the present invention include those in which chromium is added to iron and molybdenum, those in which alkali metal elements such as sodium, potassium, rubidium, and cesium are added to these, or those in which iron and molybdenum are further added. , antimony, bismuth, tungsten, cobalt, and nickel. The composition ratio of these elements is iron to molybdenum in atomic ratio of 0.05 to 1.0, alkali metal elements,
antimony, bismuth, chromium, tungsten,
The total of each element of cobalt and nickel is 0.01 to 0.5
is within the range of Further, the catalyst in the present invention is usually prepared by an impregnation method, a coprecipitation method, etc., but other methods may also be used. In addition, the form of the catalyst is metallic, oxide, chloride, nitrate, hydroxide,
It may be in any form such as acetate. because,
This is because during the reaction, in an oxygen atmosphere, whatever form it is initially in, it becomes an oxide. In carrying out the present invention, the reaction temperature used is:
Usually in the range of 200 to 500°C. Below 200°C, the yield of formaldehyde is low and impractical, and above 500°C, carbon monoxide is produced as a by-product, resulting in a decrease in formaldehyde yield and selectivity, which is not preferred. The composition ratio of methylal:oxygen supplied when carrying out the present invention is preferably 1:0.5 to 1:3, and in order to avoid an explosive range, it is preferable to coexist with an inert gas such as nitrogen. Further, the space velocity (SV) of the supplied gas is preferably in the range of 2000 to 50000 hr -1 . This reaction may be carried out under normal pressure, increased pressure, or reduced pressure. Next, the present invention will be explained in more detail with reference to Examples. Example 1 A solution of 50 g of (NH 4 ) 3 Mo 7 dissolved in 500 ml of water
A solution of 20g of FeCl 3 6H 2 O dissolved in 500ml of water
A solution of 5 g of CrCl 3 6H 2 O dissolved in 100 ml of water is mixed and stirred vigorously, and the precipitate is filtered and washed. after that,
The product was calcined in air at 110°C for 2 hours and at 400°C for 4 hours. This product, molybdenum: iron:
The chromium atomic ratio was 5:1:0.2. This product was tableted and used as a catalyst. The oxidation reaction of methylal is methylal: N2 :
A mixed gas having an O 2 molar ratio of 2:30:3 was passed through a catalyst layer in a quartz glass reaction tube at a SV of 10,000 hr -1 and a reaction temperature of 330°C. As a result, the conversion rate of methylal was 98% and the selectivity to formaldehyde was 98%. that time,
1% of carbon monoxide and 1% of dimethyl ether were produced as by-products. Comparative Example A catalyst was prepared in the same manner as in Example 1 using a solution of 50 g of (NH 4 )Mo 7 O 24 dissolved in 500 ml of water and a solution of 20 g of FeCl 3 .6H 2 O dissolved in 500 ml of water. The molybdenum:iron atomic ratio in this catalyst is 4.5:1
It was hot. Using this catalyst, methylal oxidation reaction was carried out under the same conditions as in Example 1. As a result, the conversion rate of methylal was 100%, the selectivity to formaldehyde was 89.5%, and 7% carbon monoxide, 3% dimethyl ether, and 0.5% mutyl formate were produced as by-products. Example 2 10 g of the product containing molybdenum, iron, and chromium obtained in Example 1 was immersed in 20 c.c. of 0.5 N potassium hydroxide aqueous solution for 10 minutes, then filtered and washed and heated at 400°C.
The mixture was calcined for 2 hours in nitrogen. The atomic ratio of molybdenum:iron:chromium:potassium in this product is 5:
It was 1:0.2:0.1. Using this catalyst, a reaction was carried out under the same conditions as in Example 1. As a result, the conversion rate of methylal was 100
%, formaldehyde was obtained with a selectivity of 98%. At that time, 1% of carbon monoxide and 1% of dimethyl ether were produced as by-products. Table 1 below shows the results of various catalysts when reactions were carried out under the same conditions as in Example 1 using various catalysts. 【table】
Claims (1)
ドを製造するに当り、鉄及びモリブデンに加えア
ルカリ金属元素、アンチモン、ビスマス、クロ
ム、タングステン、コバルト及びニツケルの群か
ら選ばれた１種又はそれ以上の金属元素を有効成
分とする触媒を用いることを特徴とするホルムア
ルデヒドの製造法。 ２ 触媒を構成する金属元素が、鉄、モリブデン
及びクロム或は鉄、モリブデン、クロム及びアル
カリ金属元素であることを特徴とする特許請求の
範囲第１項記載の方法。 ３ 200ないし500℃の温度範囲で反応を行うこと
を特徴とする特許請求の範囲第１項又は第２項記
載の方法。 ４ 空間温度2000〜50000hr-1の範囲で反応を行
う事を特徴とする特許請求の範囲第１項乃至第３
項記載の方法。[Claims] 1. In producing formaldehyde by the oxidation reaction of methylal, in addition to iron and molybdenum, one or more selected from the group of alkali metal elements, antimony, bismuth, chromium, tungsten, cobalt, and nickel. A method for producing formaldehyde, characterized by using a catalyst containing a metal element as an active ingredient. 2. The method according to claim 1, wherein the metal elements constituting the catalyst are iron, molybdenum, and chromium, or iron, molybdenum, chromium, and an alkali metal element. 3. The method according to claim 1 or 2, characterized in that the reaction is carried out at a temperature range of 200 to 500°C. 4 Claims 1 to 3, characterized in that the reaction is carried out at a spatial temperature in the range of 2000 to 50000 hr -1
The method described in section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56018997A JPS57134432A (en) | 1981-02-13 | 1981-02-13 | Production of formaldehyde |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56018997A JPS57134432A (en) | 1981-02-13 | 1981-02-13 | Production of formaldehyde |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57134432A JPS57134432A (en) | 1982-08-19 |
| JPS6210495B2 true JPS6210495B2 (en) | 1987-03-06 |
Family
ID=11987193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56018997A Granted JPS57134432A (en) | 1981-02-13 | 1981-02-13 | Production of formaldehyde |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57134432A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60251932A (en) * | 1984-05-29 | 1985-12-12 | Asahi Chem Ind Co Ltd | Catalyst for preparing formaldehyde by oxidation of methylal |
| DE68914858T2 (en) * | 1988-02-03 | 1994-08-11 | Asahi Chemical Ind | Process for the production of formaldehyde and its derivatives. |
-
1981
- 1981-02-13 JP JP56018997A patent/JPS57134432A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57134432A (en) | 1982-08-19 |
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