受験番号：22IPC001

Question 1
Claim 1
A honeycomb structure for cleaning exhaust gas from an internal-combustion
engine, comprising:a metal frame (2) including a metal outer wall (20) in the shape of a cylinderand metal plates (21) disposed in a space inside the metal outer wall (20), the spaceinside the metal outer wall (20) being divided by the metal plates (21) into subspaces (S)each extending in parallel to an axis of the metal outer wall (20); anda honeycomb unit (3) stored in each of the subspaces (S), wherein
the honeycomb unit (3) has cell walls (30) arranged in the form of a polygonallattice, the cell walls (30) defining cells (31) through which the exhaust gas passes, andthe honeycomb unit (3) contains a promoter-containing base material (33)
containing (i) a promotor containing a complex oxide at least containing cerium andzirconium and (ii) an inorganic binder for bonding particles of the promotor.
Claim 2The honeycomb structure according to claim 1, wherein the honeycomb unit (3)contains the complex oxide in an amount of 50 to 98 mass%.
Claim 3The honeycomb structure according to claim 1 or 2, wherein the metal frame (2)contains a ferritic stainless steel or an austenitic stainless steel.
Question 2[0004]

However, it has become clear that, in a lithium-ion secondary battery that has

a positive electrode containing a positive electrode active material that operates at ahigh potential over 4.24 V when the battery is fully charged (such a battery may behereinafter referred to as the "high-voltage lithium-ion secondary battery"), a carbonate
solvent in an electrolyte for the lithium-ion secondary battery usually undergoesoxidative decomposition at the surface of the positive electrode. This shortens the cycle
life of the battery and results in gas generation in various portions of the battery.
Therefore, conventional electrolytes cannot be used in a high-voltage lithium-ion
secondary battery and thus there is a demand for a new electrolyte that undergoes little
oxidative decomposition at the positive electrode.

[0005]

Patent Document 2 proposes a method by which to suppress the decompositionof a nonaqueous electrolyte at the positive electrode by adding a specific phosphoric acid
ester compound to the nonaqueous electrolyte. Specifically, the oxidation resistance ofa nonaqueous electrolyte is improved by adding 5 mass% of tris-(2-propenyl)phosphate
to the nonaqueous electrolyte.
Patent Document 3 proposes a method by which to improve high-temperature
characteristics of a lithium-ion secondary battery by adding a specific unsaturated
phosphoric acid ester compound to a nonaqueous electrolyte.

Specifically, Patent

Document 3 states that cycle characteristics at high temperature is improved by adding
1 mass% of tris-(2-propynyl)phosphate to the nonaqueous electrolyte.
Question 3[0010]

A scintillator crystal of the present invention contains Mn, which is theheaviest constituent in the crystal. The atomic number of Mn is 25. There is nothing
like this scintillator crystal composed of such light elements. Conventional scintillator
crystals have a large absorption coefficient.

Therefore, for example, an X-ray isabsorbed only at the entrance surface and near-surface regions and the atoms in thecrystal do not contribute to the detection of the X-ray.

On the other hand, thescintillator crystal of the present invention has a small absorption coefficient and thusan X-ray enters deep inside the scintillator crystal. Therefore, many atoms seem tocontribute to light emission.
[0011]

Mn is added in an amount of 0.1 to 5.0 mol%, preferably 0.5 to 4.0 mol%, withrespect to 1 mol of the base material. This amount is to be used just as a guide forpreparation of the crystal. Since the state of Mn in the base material is still unknown,
the amount of Mn in the resulting crystal may be somewhat different.
Question 4Thermal shrinkage
Straight lines each 100 mm in length were drawn on a test piece (a filmmeasuring 15 mm × 120 mm) in parallel to the MD and TD, respectively. The test
piece was allowed to stand at ambient temperature and pressure (at a temperature of23°C and a humidity of 50%) for 2 hours, and thereafter the length of each straight line
was measured. The measured lengths were used as the lengths before the test. Next,
the test piece was left to stand for 30 minutes with its corner fixed in an oven withinternal air circulation set at 150°C, 180°C, or 200°C, and thereafter taken out andallowed to cool at ambient temperature and pressure for 2 hours. Then, the length ofeach straight line was measured, and the difference between the lengths before andafter the test was determined, whereby the thermal shrinkage R2, which is thepercentage of the difference between the lengths before and after the test, wascalculated. When R2 is a positive value, this means that the test piece has shrunk.
Excellent: absolute value of R2 ≤ 1.5% (excellent)
Good: 1.5% < absolute value of R2 ≤ 2.0% (good)
Average: 2.0% < absolute value of R2 ≤ 2.5% (no problem in practical use)
Poor: 2.5% < absolute value of R2 (may have some problem in practical use)