JPH01249622A - Production of porous activated silica - Google Patents
Production of porous activated silicaInfo
- Publication number
- JPH01249622A JPH01249622A JP7738288A JP7738288A JPH01249622A JP H01249622 A JPH01249622 A JP H01249622A JP 7738288 A JP7738288 A JP 7738288A JP 7738288 A JP7738288 A JP 7738288A JP H01249622 A JPH01249622 A JP H01249622A
- Authority
- JP
- Japan
- Prior art keywords
- activated silica
- silica
- porous activated
- heating
- silicon
- 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.)
- Pending
Links
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical class O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 16
- 239000002028 Biomass Substances 0.000 claims abstract description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 6
- 239000001301 oxygen Substances 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 abstract description 5
- 239000010419 fine particle Substances 0.000 abstract description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract 2
- 229910052710 silicon Inorganic materials 0.000 abstract 2
- 239000010703 silicon Substances 0.000 abstract 2
- 239000000377 silicon dioxide Substances 0.000 description 10
- 241000209094 Oryza Species 0.000 description 9
- 235000007164 Oryza sativa Nutrition 0.000 description 9
- 235000009566 rice Nutrition 0.000 description 9
- 239000010903 husk Substances 0.000 description 8
- 239000002245 particle Substances 0.000 description 7
- 239000000843 powder Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- VXEGSRKPIUDPQT-UHFFFAOYSA-N 4-[4-(4-methoxyphenyl)piperazin-1-yl]aniline Chemical compound C1=CC(OC)=CC=C1N1CCN(C=2C=CC(N)=CC=2)CC1 VXEGSRKPIUDPQT-UHFFFAOYSA-N 0.000 description 1
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 244000025254 Cannabis sativa Species 0.000 description 1
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 1
- 244000082204 Phyllostachys viridis Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002367 phosphate rock Substances 0.000 description 1
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 239000005049 silicon tetrachloride Substances 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
- C01B33/18—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof
- C01B33/181—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof by a dry process
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/12—Surface area
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/80—Compositional purity
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Silicon Compounds (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は多孔質活性シリカの製造方法に関し、更に詳細
に説明すると、籾殻、稲わら等のケイ素集積バイオマス
から製造した多孔性質活性シリカの製造方法に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for producing porous activated silica. More specifically, the present invention relates to a method for producing porous activated silica, and more specifically, a method for producing porous activated silica produced from silicon-integrated biomass such as rice husk and rice straw. Regarding the method.
（従来の技術及び課題〕
シリカは、地殻の構成元素として多量に存在し、全地殻
構成成分の約６０％を占めている。これらはケイ酸塩と
して存在し、石英、リンケイ石、クリストバル石、その
他の結晶形を有するもの、ガラス状、コロイド状のもの
等が知られている。(Prior art and problems) Silica exists in large quantities as a constituent element of the earth's crust, accounting for approximately 60% of all the constituent elements of the earth's crust.These exist as silicates, including quartz, phosphorite, cristobalite, Those having other crystalline forms, glassy, colloidal, etc. are known.
微粒子状シリカとしては、フェロシリコンを塩素化して
四塩化ケイ素としたものを精製し、加水分解して得られ
たものか挙げられる。しかし、斯るシリカは、製造工程
が複雑であるため、安価に提供することができないとい
・う欠点を有している。Examples of the particulate silica include those obtained by chlorinating ferrosilicon to form silicon tetrachloride, purifying it, and hydrolyzing it. However, such silica has the disadvantage that it cannot be provided at low cost because the manufacturing process is complicated.
本発明の目的は、微粒子の多孔質活性シリカの安価な製
造方法を提供することにある。An object of the present invention is to provide an inexpensive method for producing fine-particle porous activated silica.
本発明は上述せる課題に鑑みてなされたもので、ケイ素
集積バイオマスを酸素雰囲気中で１００〜６００℃に徐
々に加熱し、次いで、４００〜１０００℃で更に加熱す
ることを特徴とする。The present invention has been made in view of the above-mentioned problems, and is characterized by gradually heating silicon-integrated biomass to 100 to 600°C in an oxygen atmosphere, and then further heating to 400 to 1000°C.
本発明において使用されるケイ素集積バイオマスとは、
シリカ成分を含有する植物（ケイ素集積植物）又はその
葉、茎等の部分を意味し、更に具体的には、稲等の籾殻
又は葉、笹の葉、トウモロコシやとくさの葉又は茎等が
挙げられる。The silicon-integrated biomass used in the present invention is:
It refers to plants containing silica components (silicon-accumulating plants) or their leaves, stems, etc. More specifically, examples include rice husks or leaves, bamboo leaves, corn, and grass leaves or stems. It will be done.
本発明の多孔質活性シリカの製造方法は、上記ケイ素集
積バイオマスを加熱処理することにより得られる。The method for producing porous activated silica of the present invention is obtained by heat-treating the silicon-integrated biomass.
本発明における多孔質活性シリカの製造方法は、先ずケ
イ素集積バイオマスとして、−に記したもののうち、例
えば、籾殻そのもの、あるいは籾殻を粉砕して得た籾殻
粉末を、空気中また！Ｊ酸素雰囲気中で、−次の加熱と
して１００〜６００℃１好ましくは１５０〜５００’ｃ
に徐々に加熱する。次いて二次加熱として４００〜］Ｏ
ＯＯ’Ｃ１好ましく ｉａ：ｓｏｏ〜７００℃に加熱す
る。加熱時間は、−次加熱においては、１〜５時間、好
ましくは２〜３時間であり、二次加熱においては、１〜
５時間、好ましくは２〜３時間である。In the method for producing porous activated silica in the present invention, first, as silicon-integrated biomass, among the materials listed in -, for example, rice husk itself or rice husk powder obtained by crushing rice husk is used in the air or! In an oxygen atmosphere, - 100 to 600°C as the next heating, preferably 150 to 500'c
Heat gradually. Then, as secondary heating, 400~]O
OO'C1 preferably heated to ia:soo~700°C. The heating time is 1 to 5 hours, preferably 2 to 3 hours in the secondary heating, and 1 to 3 hours in the secondary heating.
5 hours, preferably 2 to 3 hours.
本発明において、加熱処理を二段階で行う理由は、ケイ
素集積バイオマスを一次加熱した際にタール分が発生す
るが、−段階で急速に加熱すると、このタール分がシリ
カが焼結する際、結晶内に取り込まれて炭素として残留
し、純粋なシリカとはならないからである。本発明にお
いては、これらタール分が一次加熱の際に適切に除去さ
れるので、二次力１１．８１５により純粋な多孔質活性
シリカを得ることができる。In the present invention, the reason why the heat treatment is carried out in two stages is that tar is generated when the silicon-integrated biomass is primarily heated, but if it is rapidly heated in the - stage, this tar will crystallize when the silica sinters. This is because it is taken into the interior and remains as carbon, and does not become pure silica. In the present invention, since these tar components are appropriately removed during primary heating, pure porous activated silica can be obtained with a secondary force of 11.815.
本発明において、ケイ素集積バイオマスとして粉末状の
ものを使用する場合にＧＪ、粉末の粒径は適宜選択され
るか、一般に、１５２μＩｎ以下（以下「タイプＡ」と
称する。）、１５２μｍ〜２９５μｍ（以下［タイプＢ
］と称する。）、２９５ ｐ ｍ〜］０００ｍ （以下
「タイプＣ」と称する。）又はこれらの混合物を使用す
ることが好ましい。In the present invention, when powdered silicon-integrated biomass is used, the particle size of the GJ powder is appropriately selected, or generally, 152 μIn or less (hereinafter referred to as "Type A"), 152 μm to 295 μm (hereinafter referred to as "Type A"), or [Type B
]. ), 295 p m to ]000 m (hereinafter referred to as "Type C"), or a mixture thereof is preferably used.
本発明においては、上記タイプＡのものを使用した場合
には、３０〜１５０ｍ／ｇの比表面積を有する多孔質活
性シリカが、同タイプＢのものからは２０〜］、ＯＯｍ
／ｇのものが、更に同タイプＣのものからは１５〜５０
ｉ／ｇのものがそれぞれ得られた。In the present invention, when the above type A is used, porous activated silica having a specific surface area of 30 to 150 m/g is used, whereas when the same type B is used, the porous activated silica has a specific surface area of 20 to
/g, and 15 to 50 from the same type C.
i/g of each were obtained.
本発明に依れば、従来法である鉱物より得られたシリカ
に比較して、比表面積が大きく活性度が高いシリカが得
られた。又、ケイ素集積バイオマスを単に加熱焼成して
得られたシリカと比較して、炭素含有量が全くないシリ
カを得ることができる。According to the present invention, silica with a large specific surface area and high activity was obtained compared to silica obtained from minerals using conventional methods. Furthermore, compared to silica obtained by simply heating and calcining silicon-integrated biomass, silica with no carbon content can be obtained.
更に、従来法は複雑な精製二「程を要するのに対し、本
発明方法に依れば、沖縄な工程で、且つ、籾殻等の安価
な原料が使用可能であるため、供給か安定で安価な多孔
質活性シリカを得ることかできる。Furthermore, while the conventional method requires two complicated refining steps, the method of the present invention uses an Okinawan process and can use inexpensive raw materials such as rice husks, resulting in a stable and inexpensive supply. Porous activated silica can be obtained.
水分率７〜９％の籾殻を準備し、これを温度２００〜３
００℃、圧力５０〜］−５（ｌｔｏｎ／ｃ＋ｄ及び摩擦
熱により、全体を固形状とした。次いてこの固形物を粉
砕機を用いて、粒径１５２μｍ以下の粒子（タイプΔ）
、粒径１５２〜２９５μｍの粒子（タイプＢ）及びオイ
ノ径２９５〜１０００μｍの粒子（タイプＣ）の３種類
に分割した。Prepare rice husks with a moisture content of 7-9% and heat them at a temperature of 200-3.
00°C, pressure 50~]-5 (lton/c+d and frictional heat, the whole was made into a solid state. Next, this solid was crushed into particles with a particle size of 152 μm or less (type Δ) using a pulverizer.
The particles were divided into three types: particles with a diameter of 152 to 295 μm (type B) and particles with a diameter of 295 to 1000 μm (type C).
次に、上記３種類の籾殻粉末を、酸素雰囲気中において
、それぞれ温度１５０℃１２００’Ｃ３３００°（゛及
び４００’Ｃで各１時間の一次加熱をし、次いて、５
（ｌ ０℃１６００℃及び７００°（じで各３０分、及
Ｏ・ε１００’ｃで５時間のニー次加熱をして桃白色の
粉末を１″、また。１）ｊ、られたシリカ微粒子の比表
面積及び平均粒度を測定し、その結果を第１表に示す。Next, the above three types of rice husk powders were first heated in an oxygen atmosphere at a temperature of 150°C, 1200°C, and 3300°C for 1 hour each.
(L 0℃ 1600℃ and 700℃ (30 minutes each, and 5 hours at O ε 100'c) to produce a pink white powder of 1". The specific surface area and average particle size of the sample were measured, and the results are shown in Table 1.
また上記シリカ微粒子の化学分＋Ｊｒ （ｌＩ′ｃを第
２表に示す。Further, the chemical content + Jr (lI'c) of the silica fine particles is shown in Table 2.
第 １ 表
第 ２ 表
以上の結果から明らかなように、本発明方法に依れば、
簡便な操作で、比表面積が大きく活性度が高い多孔質活
性シリカを安価に得ることができた。As is clear from the results shown in Table 1 and Table 2, according to the method of the present invention,
With simple operations, porous activated silica with a large specific surface area and high activity could be obtained at low cost.
特許出願人 池田物産株式会社Patent applicant: Ikeda Bussan Co., Ltd.
Claims (1)
℃に徐々に加熱し、次いで、４００〜１０００℃で更に
加熱することを特徴とする多孔質活性シリカの製造方法
。100-600 silicon-integrated biomass in oxygen atmosphere
A method for producing porous activated silica, which comprises gradually heating to 400 to 1000°C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7738288A JPH01249622A (en) | 1988-03-30 | 1988-03-30 | Production of porous activated silica |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7738288A JPH01249622A (en) | 1988-03-30 | 1988-03-30 | Production of porous activated silica |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01249622A true JPH01249622A (en) | 1989-10-04 |
Family
ID=13632340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7738288A Pending JPH01249622A (en) | 1988-03-30 | 1988-03-30 | Production of porous activated silica |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01249622A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008207169A (en) * | 2007-01-31 | 2008-09-11 | Suminoe Textile Co Ltd | Manufacturing method of white chaff ash |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4952472A (en) * | 1972-07-28 | 1974-05-21 | ||
| JPS526397A (en) * | 1975-07-01 | 1977-01-18 | Deii Sutanbuuku Deii Horuhe | Manufacturing process for silica or silicate |
-
1988
- 1988-03-30 JP JP7738288A patent/JPH01249622A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4952472A (en) * | 1972-07-28 | 1974-05-21 | ||
| JPS526397A (en) * | 1975-07-01 | 1977-01-18 | Deii Sutanbuuku Deii Horuhe | Manufacturing process for silica or silicate |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008207169A (en) * | 2007-01-31 | 2008-09-11 | Suminoe Textile Co Ltd | Manufacturing method of white chaff ash |
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